<?xml version="1.0" encoding="UTF-16"?>
<analytes xmlns="http://dr-dn.nrc-cnrc.gc.ca/analytexml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://dr-dn.nrc-cnrc.gc.ca/analytexml https://nrc-digital-repository.canada.ca/schema/analytexml.xsd">
  <analyte>
    <name>
      <term xml:lang="en">molybdenum</term>
      <term xml:lang="fr">molybdène</term>
    </name>
    <symbol>Mo</symbol>
    <identifier type="InChIKey">ZOKXTWBITQBERF-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Mo)</symbol>
      </quantity>
      <value>0.999336</value>
      <unit>kg/kg</unit>
      <uncertainty type="standard">0.000141</uncertainty>
      <uncertainty type="expanded">0.000282</uncertainty>
      <display>0.999 336 &amp;#177; 0.000 282</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">lithium</term>
      <term xml:lang="fr">lithium</term>
    </name>
    <symbol>Li</symbol>
    <identifier type="InChIKey">WHXSMMKQMYFTQS-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Li)</symbol>
      </quantity>
      <value>20</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">20</uncertainty>
      <uncertainty type="expanded">40</uncertainty>
      <display>20 &amp;#177; 40</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">beryllium</term>
      <term xml:lang="fr">béryllium</term>
    </name>
    <symbol>Be</symbol>
    <identifier type="InChIKey">ATBAMAFKBVZNFJ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Be)</symbol>
      </quantity>
      <value>&lt;0.4</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.1</uncertainty>
      <uncertainty type="expanded">0.2</uncertainty>
      <display>&lt;0.4 &amp;#177; 0.2</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">boron</term>
      <term xml:lang="fr">bore</term>
    </name>
    <symbol>B</symbol>
    <identifier type="InChIKey">ZOXJGFHDIHLPTG-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(B)</symbol>
      </quantity>
      <value>150</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">80</uncertainty>
      <uncertainty type="expanded">160</uncertainty>
      <display>150 &amp;#177; 160</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">carbon</term>
      <term xml:lang="fr">carbone</term>
    </name>
    <symbol>C</symbol>
    <identifier type="InChIKey">OKTJSMMVPCPJKN-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(C)</symbol>
      </quantity>
      <value>400</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">2450</uncertainty>
      <uncertainty type="expanded">4900</uncertainty>
      <display>400 &amp;#177; 4900</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">nitrogen</term>
      <term xml:lang="fr">azote</term>
    </name>
    <symbol>N</symbol>
    <identifier type="InChIKey">IJGRMHOSHXDMSA-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(N)</symbol>
      </quantity>
      <value>3400</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">17050</uncertainty>
      <uncertainty type="expanded">34100</uncertainty>
      <display>3400 &amp;#177; 34 100</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">oxygen</term>
      <term xml:lang="fr">oxygène</term>
    </name>
    <symbol>O</symbol>
    <identifier type="InChIKey">MYMOFIZGZYHOMD-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(O)</symbol>
      </quantity>
      <value>440000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">130000</uncertainty>
      <uncertainty type="expanded">260000</uncertainty>
      <display>440 000 &amp;#177; 260 000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">fluorine</term>
      <term xml:lang="fr">fluor</term>
    </name>
    <symbol>F</symbol>
    <identifier type="InChIKey">PXGOKWXKJXAPGV-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(F)</symbol>
      </quantity>
      <value>&lt;90</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">110</uncertainty>
      <uncertainty type="expanded">220</uncertainty>
      <display>&lt;90 &amp;#177; 220</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">sodium</term>
      <term xml:lang="fr">sodium</term>
    </name>
    <symbol>Na</symbol>
    <identifier type="InChIKey">KEAYESYHFKHZAL-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Na)</symbol>
      </quantity>
      <value>2000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">2150</uncertainty>
      <uncertainty type="expanded">4300</uncertainty>
      <display>2000 &amp;#177; 4300</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">magnesium</term>
      <term xml:lang="fr">magnésium</term>
    </name>
    <symbol>Mg</symbol>
    <identifier type="InChIKey">FYYHWMGAXLPEAU-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Mg)</symbol>
      </quantity>
      <value>1300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">400</uncertainty>
      <uncertainty type="expanded">800</uncertainty>
      <display>1300 &amp;#177; 800</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">aluminium</term>
      <term xml:lang="fr">aluminium</term>
    </name>
    <symbol>Al</symbol>
    <identifier type="InChIKey">XAGFODPZIPBFFR-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Al)</symbol>
      </quantity>
      <value>5100</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1000</uncertainty>
      <uncertainty type="expanded">2000</uncertainty>
      <display>5100 &amp;#177; 2000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">silicon</term>
      <term xml:lang="fr">silicium</term>
    </name>
    <symbol>Si</symbol>
    <identifier type="InChIKey">XUIMIQQOPSSXEZ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Si)</symbol>
      </quantity>
      <value>1600</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">650</uncertainty>
      <uncertainty type="expanded">1300</uncertainty>
      <display>1600 &amp;#177; 1300</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">phosphorus</term>
      <term xml:lang="fr">phosphore</term>
    </name>
    <symbol>P</symbol>
    <identifier type="InChIKey">OAICVXFJPJFONN-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(P)</symbol>
      </quantity>
      <value>730</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">255</uncertainty>
      <uncertainty type="expanded">510</uncertainty>
      <display>730 &amp;#177; 510</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">sulfur</term>
      <term xml:lang="fr">soufre</term>
    </name>
    <symbol>S</symbol>
    <identifier type="InChIKey">NINIDFKCEFEMDL-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(S)</symbol>
      </quantity>
      <value>1300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">450</uncertainty>
      <uncertainty type="expanded">900</uncertainty>
      <display>1300 &amp;#177; 900</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">chlorine</term>
      <term xml:lang="fr">chlore</term>
    </name>
    <symbol>Cl</symbol>
    <identifier type="InChIKey">KZBUYRJDOAKODT-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Cl)</symbol>
      </quantity>
      <value>40</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">115</uncertainty>
      <uncertainty type="expanded">230</uncertainty>
      <display>40 &amp;#177; 230</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">potassium</term>
      <term xml:lang="fr">potassium</term>
    </name>
    <symbol>K</symbol>
    <identifier type="InChIKey">ZLMJMSJWJFRBEC-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(K)</symbol>
      </quantity>
      <value>39000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">38500</uncertainty>
      <uncertainty type="expanded">77000</uncertainty>
      <display>39 000 &amp;#177; 77 000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">calcium</term>
      <term xml:lang="fr">calcium</term>
    </name>
    <symbol>Ca</symbol>
    <identifier type="InChIKey">OYPRJOBELJOOCE-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ca)</symbol>
      </quantity>
      <value>4100</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1400</uncertainty>
      <uncertainty type="expanded">2800</uncertainty>
      <display>4100 &amp;#177; 2800</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">scandium</term>
      <term xml:lang="fr">scandium</term>
    </name>
    <symbol>Sc</symbol>
    <identifier type="InChIKey">SIXSYDAISGFNSX-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Sc)</symbol>
      </quantity>
      <value>28</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">14</uncertainty>
      <uncertainty type="expanded">28</uncertainty>
      <display>28 &amp;#177; 28</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">titanium</term>
      <term xml:lang="fr">titane</term>
    </name>
    <symbol>Ti</symbol>
    <identifier type="InChIKey">RTAQQCXQSZGOHL-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ti)</symbol>
      </quantity>
      <value>&lt;80000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">20000</uncertainty>
      <uncertainty type="expanded">40000</uncertainty>
      <display>&lt;80 000 &amp;#177; 40 000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">vanadium</term>
      <term xml:lang="fr">vanadium</term>
    </name>
    <symbol>V</symbol>
    <identifier type="InChIKey">LEONUFNNVUYDNQ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(V)</symbol>
      </quantity>
      <value>160</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">15</uncertainty>
      <uncertainty type="expanded">30</uncertainty>
      <display>160 &amp;#177; 30</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">chromium</term>
      <term xml:lang="fr">chrome</term>
    </name>
    <symbol>Cr</symbol>
    <identifier type="InChIKey">VYZAMTAEIAYCRO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Cr)</symbol>
      </quantity>
      <value>7300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1100</uncertainty>
      <uncertainty type="expanded">2200</uncertainty>
      <display>7300 &amp;#177; 2200</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">manganese</term>
      <term xml:lang="fr">manganèse</term>
    </name>
    <symbol>Mn</symbol>
    <identifier type="InChIKey">PWHULOQIROXLJO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Mn)</symbol>
      </quantity>
      <value>1300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">300</uncertainty>
      <uncertainty type="expanded">600</uncertainty>
      <display>1300 &amp;#177; 600</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">iron</term>
      <term xml:lang="fr">fer</term>
    </name>
    <symbol>Fe</symbol>
    <identifier type="InChIKey">XEEYBQQBJWHFJM-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Fe)</symbol>
      </quantity>
      <value>31000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">3000</uncertainty>
      <uncertainty type="expanded">6000</uncertainty>
      <display>31 000 &amp;#177; 6000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">cobalt</term>
      <term xml:lang="fr">cobalt</term>
    </name>
    <symbol>Co</symbol>
    <identifier type="InChIKey">GUTLYIVDDKVIGB-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Co)</symbol>
      </quantity>
      <value>350</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">90</uncertainty>
      <uncertainty type="expanded">180</uncertainty>
      <display>350 &amp;#177; 180</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">nickel</term>
      <term xml:lang="fr">nickel</term>
    </name>
    <symbol>Ni</symbol>
    <identifier type="InChIKey">PXHVJJICTQNCMI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ni)</symbol>
      </quantity>
      <value>6900</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">700</uncertainty>
      <uncertainty type="expanded">1400</uncertainty>
      <display>6900 &amp;#177; 1400</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">copper</term>
      <term xml:lang="fr">cuivre</term>
    </name>
    <symbol>Cu</symbol>
    <identifier type="InChIKey">RYGMFSIKBFXOCR-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Cu)</symbol>
      </quantity>
      <value>200</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">350</uncertainty>
      <uncertainty type="expanded">700</uncertainty>
      <display>200 &amp;#177; 700</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">zinc</term>
      <term xml:lang="fr">zinc</term>
    </name>
    <symbol>Zn</symbol>
    <identifier type="InChIKey">HCHKCACWOHOZIP-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Zn)</symbol>
      </quantity>
      <value>&lt;540</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">135</uncertainty>
      <uncertainty type="expanded">270</uncertainty>
      <display>&lt;540 &amp;#177; 270</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">gallium</term>
      <term xml:lang="fr">gallium</term>
    </name>
    <symbol>Ga</symbol>
    <identifier type="InChIKey">GYHNNYVSQQEPJS-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ga)</symbol>
      </quantity>
      <value>&lt;12</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">3</uncertainty>
      <uncertainty type="expanded">6</uncertainty>
      <display>&lt;12 &amp;#177; 6</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">germanium</term>
      <term xml:lang="fr">germanium</term>
    </name>
    <symbol>Ge</symbol>
    <identifier type="InChIKey">GNPVGFCGXDBREM-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ge)</symbol>
      </quantity>
      <value>&lt;10</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5</uncertainty>
      <uncertainty type="expanded">10</uncertainty>
      <display>&lt;10 &amp;#177; 10</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">arsenic</term>
      <term xml:lang="fr">arsenic</term>
    </name>
    <symbol>As</symbol>
    <identifier type="InChIKey">RQNWIZPPADIBDY-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(As)</symbol>
      </quantity>
      <value>&lt;5</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1</uncertainty>
      <uncertainty type="expanded">2</uncertainty>
      <display>&lt;5 &amp;#177; 2</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">selenium</term>
      <term xml:lang="fr">sélénium</term>
    </name>
    <symbol>Se</symbol>
    <identifier type="InChIKey">BUGBHKTXTAQXES-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Se)</symbol>
      </quantity>
      <value>&lt;20</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5</uncertainty>
      <uncertainty type="expanded">10</uncertainty>
      <display>&lt;20 &amp;#177; 10</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">bromine</term>
      <term xml:lang="fr">brome</term>
    </name>
    <symbol>Br</symbol>
    <identifier type="InChIKey">GDTBXPJZTBHREO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Br)</symbol>
      </quantity>
      <value>&lt;30</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">35</uncertainty>
      <uncertainty type="expanded">70</uncertainty>
      <display>&lt;30 &amp;#177; 70</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">rubidium</term>
      <term xml:lang="fr">rubidium</term>
    </name>
    <symbol>Rb</symbol>
    <identifier type="InChIKey">IGLNJRXAVVLDKE-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Rb)</symbol>
      </quantity>
      <value>&lt;120</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">85</uncertainty>
      <uncertainty type="expanded">170</uncertainty>
      <display>&lt;120 &amp;#177; 170</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">strontium</term>
      <term xml:lang="fr">strontium</term>
    </name>
    <symbol>Sr</symbol>
    <identifier type="InChIKey">CIOAGBVUUVVLOB-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Sr)</symbol>
      </quantity>
      <value>&lt;60</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">20</uncertainty>
      <uncertainty type="expanded">40</uncertainty>
      <display>&lt;60 &amp;#177; 40</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">yttrium</term>
      <term xml:lang="fr">yttrium</term>
    </name>
    <symbol>Y</symbol>
    <identifier type="InChIKey">VWQVUPCCIRVNHF-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Y)</symbol>
      </quantity>
      <value>&lt;60</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">42</uncertainty>
      <uncertainty type="expanded">84</uncertainty>
      <display>&lt;60 &amp;#177; 84</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">zirconium</term>
      <term xml:lang="fr">zirconium</term>
    </name>
    <symbol>Zr</symbol>
    <identifier type="InChIKey">QCWXUUIWCKQGHC-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Zr)</symbol>
      </quantity>
      <value>&lt;90</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">25</uncertainty>
      <uncertainty type="expanded">50</uncertainty>
      <display>&lt;90 &amp;#177; 50</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">niobium</term>
      <term xml:lang="fr">niobium</term>
    </name>
    <symbol>Nb</symbol>
    <identifier type="InChIKey">GUCVJGMIXFAOAE-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Nb)</symbol>
      </quantity>
      <value>&lt;160</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">45</uncertainty>
      <uncertainty type="expanded">90</uncertainty>
      <display>&lt;160 &amp;#177; 90</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">ruthenium</term>
      <term xml:lang="fr">ruthénium</term>
    </name>
    <symbol>Ru</symbol>
    <identifier type="InChIKey">KJTLSVCANCCWHF-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ru)</symbol>
      </quantity>
      <value>&lt;30</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">35</uncertainty>
      <uncertainty type="expanded">70</uncertainty>
      <display>&lt;30 &amp;#177; 70</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">rhodium</term>
      <term xml:lang="fr">rhodium</term>
    </name>
    <symbol>Rh</symbol>
    <identifier type="InChIKey">MHOVAHRLVXNVSD-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Rh)</symbol>
      </quantity>
      <value>&lt;14</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">9.5</uncertainty>
      <uncertainty type="expanded">19</uncertainty>
      <display>&lt;14 &amp;#177; 19</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">palladium</term>
      <term xml:lang="fr">palladium</term>
    </name>
    <symbol>Pd</symbol>
    <identifier type="InChIKey">KDLHZDBZIXYQEI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Pd)</symbol>
      </quantity>
      <value>&lt;9</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5</uncertainty>
      <uncertainty type="expanded">10</uncertainty>
      <display>&lt;9 &amp;#177; 10</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">silver</term>
      <term xml:lang="fr">argent</term>
    </name>
    <symbol>Ag</symbol>
    <identifier type="InChIKey">BQCADISMDOOEFD-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ag)</symbol>
      </quantity>
      <value>300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">75</uncertainty>
      <uncertainty type="expanded">150</uncertainty>
      <display>300 &amp;#177; 150</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">cadmium</term>
      <term xml:lang="fr">cadmium</term>
    </name>
    <symbol>Cd</symbol>
    <identifier type="InChIKey">BDOSMKKIYDKNTQ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Cd)</symbol>
      </quantity>
      <value>&lt;10000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">3000</uncertainty>
      <uncertainty type="expanded">6000</uncertainty>
      <display>&lt;10 000 &amp;#177; 6000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">indium</term>
      <term xml:lang="fr">indium</term>
    </name>
    <symbol>In</symbol>
    <identifier type="InChIKey">APFVFJFRJDLVQX-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(In)</symbol>
      </quantity>
      <value>&lt;30</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">20</uncertainty>
      <uncertainty type="expanded">40</uncertainty>
      <display>&lt;30 &amp;#177; 40</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">tin</term>
      <term xml:lang="fr">etain</term>
    </name>
    <symbol>Sn</symbol>
    <identifier type="InChIKey">ATJFFYVFTNAWJD-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Sn)</symbol>
      </quantity>
      <value>&lt;50</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">15</uncertainty>
      <uncertainty type="expanded">30</uncertainty>
      <display>&lt;50 &amp;#177; 30</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">antimony</term>
      <term xml:lang="fr">antimoine</term>
    </name>
    <symbol>Sb</symbol>
    <identifier type="InChIKey">WATWJIUSRGPENY-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Sb)</symbol>
      </quantity>
      <value>80</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">150</uncertainty>
      <uncertainty type="expanded">300</uncertainty>
      <display>80 &amp;#177; 300</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">tellurium</term>
      <term xml:lang="fr">tellure</term>
    </name>
    <symbol>Te</symbol>
    <identifier type="InChIKey">PORWMNRCUJJQNO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Te)</symbol>
      </quantity>
      <value>&lt;30</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5</uncertainty>
      <uncertainty type="expanded">10</uncertainty>
      <display>&lt;30 &amp;#177; 10</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">iodine</term>
      <term xml:lang="fr">iode</term>
    </name>
    <symbol>I</symbol>
    <identifier type="InChIKey">PNDPGZBMCMUPRI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(I)</symbol>
      </quantity>
      <value>&lt;40</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">45</uncertainty>
      <uncertainty type="expanded">90</uncertainty>
      <display>&lt;40 &amp;#177; 90</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">caesium</term>
      <term xml:lang="fr">césium</term>
    </name>
    <symbol>Cs</symbol>
    <identifier type="InChIKey">TVFDJXOCXUVLDH-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Cs)</symbol>
      </quantity>
      <value>&lt;10</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">110</uncertainty>
      <uncertainty type="expanded">220</uncertainty>
      <display>&lt;10 &amp;#177; 220</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">barium</term>
      <term xml:lang="fr">baryum</term>
    </name>
    <symbol>Ba</symbol>
    <identifier type="InChIKey">DSAJWYNOEDNPEQ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ba)</symbol>
      </quantity>
      <value>&lt;8000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5500</uncertainty>
      <uncertainty type="expanded">11000</uncertainty>
      <display>&lt;8000 &amp;#177; 11 000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">lanthanum</term>
      <term xml:lang="fr">lanthane</term>
    </name>
    <symbol>La</symbol>
    <identifier type="InChIKey">FZLIPJUXYLNCLC-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(La)</symbol>
      </quantity>
      <value>&lt;6</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">15</uncertainty>
      <uncertainty type="expanded">30</uncertainty>
      <display>&lt;6 &amp;#177; 30</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">cerium</term>
      <term xml:lang="fr">cérium</term>
    </name>
    <symbol>Ce</symbol>
    <identifier type="InChIKey">GWXLDORMOJMVQZ-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ce)</symbol>
      </quantity>
      <value>&lt;10</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">5</uncertainty>
      <uncertainty type="expanded">10</uncertainty>
      <display>&lt;10 &amp;#177; 10</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">praseodymium</term>
      <term xml:lang="fr">praséodyme</term>
    </name>
    <symbol>Pr</symbol>
    <identifier type="InChIKey">PUDIUYLPXJFUGB-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Pr)</symbol>
      </quantity>
      <value>&lt;3</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">4</uncertainty>
      <uncertainty type="expanded">8</uncertainty>
      <display>&lt;3 &amp;#177; 8</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">neodymium</term>
      <term xml:lang="fr">néodyme</term>
    </name>
    <symbol>Nd</symbol>
    <identifier type="InChIKey">QEFYFXOXNSNQGX-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Nd)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.5</uncertainty>
      <uncertainty type="expanded">1</uncertainty>
      <display>&lt;1 &amp;#177; 1</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">samarium</term>
      <term xml:lang="fr">samarium</term>
    </name>
    <symbol>Sm</symbol>
    <identifier type="InChIKey">KZUNJOHGWZRPMI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Sm)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1</uncertainty>
      <uncertainty type="expanded">2</uncertainty>
      <display>&lt;1 &amp;#177; 2</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">europium</term>
      <term xml:lang="fr">europium</term>
    </name>
    <symbol>Eu</symbol>
    <identifier type="InChIKey">OGPBJKLSAFTDLK-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Eu)</symbol>
      </quantity>
      <value>&lt;0.4</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.65</uncertainty>
      <uncertainty type="expanded">1.3</uncertainty>
      <display>&lt;0.4 &amp;#177; 1.3</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">gadolinium</term>
      <term xml:lang="fr">gadolinium</term>
    </name>
    <symbol>Gd</symbol>
    <identifier type="InChIKey">UIWYJDYFSGRHKR-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Gd)</symbol>
      </quantity>
      <value>&lt;2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">2</uncertainty>
      <uncertainty type="expanded">4</uncertainty>
      <display>&lt;2 &amp;#177; 4</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">terbium</term>
      <term xml:lang="fr">terbium</term>
    </name>
    <symbol>Tb</symbol>
    <identifier type="InChIKey">GZCRRIHWUXGPOV-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Tb)</symbol>
      </quantity>
      <value>&lt;0.2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.25</uncertainty>
      <uncertainty type="expanded">0.5</uncertainty>
      <display>&lt;0.2 &amp;#177; 0.5</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">dysprosium</term>
      <term xml:lang="fr">dysprosium</term>
    </name>
    <symbol>Dy</symbol>
    <identifier type="InChIKey">KBQHZAAAGSGFKK-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Dy)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1</uncertainty>
      <uncertainty type="expanded">2</uncertainty>
      <display>&lt;1 &amp;#177; 2</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">holmium</term>
      <term xml:lang="fr">holmium</term>
    </name>
    <symbol>Ho</symbol>
    <identifier type="InChIKey">KJZYNXUDTRRSPN-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ho)</symbol>
      </quantity>
      <value>&lt;0.2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.25</uncertainty>
      <uncertainty type="expanded">0.5</uncertainty>
      <display>&lt;0.2 &amp;#177; 0.5</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">erbium</term>
      <term xml:lang="fr">erbium</term>
    </name>
    <symbol>Er</symbol>
    <identifier type="InChIKey">UYAHIZSMUZPPFV-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Er)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.5</uncertainty>
      <uncertainty type="expanded">1</uncertainty>
      <display>&lt;1 &amp;#177; 1</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">thulium</term>
      <term xml:lang="fr">thulium</term>
    </name>
    <symbol>Tm</symbol>
    <identifier type="InChIKey">FRNOGLGSGLTDKL-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Tm)</symbol>
      </quantity>
      <value>&lt;0.2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.25</uncertainty>
      <uncertainty type="expanded">0.5</uncertainty>
      <display>&lt;0.2 &amp;#177; 0.5</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">ytterbium</term>
      <term xml:lang="fr">ytterbium</term>
    </name>
    <symbol>Yb</symbol>
    <identifier type="InChIKey">NAWDYIZEMPQZHO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Yb)</symbol>
      </quantity>
      <value>&lt;2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">2.5</uncertainty>
      <uncertainty type="expanded">5</uncertainty>
      <display>&lt;2 &amp;#177; 5</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">lutetium</term>
      <term xml:lang="fr">lutetium</term>
    </name>
    <symbol>Lu</symbol>
    <identifier type="InChIKey">OHSVLFRHMCKCQY-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Lu)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1</uncertainty>
      <uncertainty type="expanded">2</uncertainty>
      <display>&lt;1 &amp;#177; 2</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">hafnium</term>
      <term xml:lang="fr">hafnium</term>
    </name>
    <symbol>Hf</symbol>
    <identifier type="InChIKey">VBJZVLUMGGDVMO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Hf)</symbol>
      </quantity>
      <value>&lt;80</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">45</uncertainty>
      <uncertainty type="expanded">90</uncertainty>
      <display>&lt;80 &amp;#177; 90</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">tantalum</term>
      <term xml:lang="fr">tantale</term>
    </name>
    <symbol>Ta</symbol>
    <identifier type="InChIKey">GUVRBAGPIYLISA-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ta)</symbol>
      </quantity>
      <value>&lt;2000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1000</uncertainty>
      <uncertainty type="expanded">2000</uncertainty>
      <display>&lt;2000 &amp;#177; 2000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">tungsten</term>
      <term xml:lang="fr">tungstène</term>
    </name>
    <symbol>W</symbol>
    <identifier type="InChIKey">WFKWXMTUELFFGS-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(W)</symbol>
      </quantity>
      <value>67000</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">26500</uncertainty>
      <uncertainty type="expanded">53000</uncertainty>
      <display>67 000 &amp;#177; 53 000</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">rhenium</term>
      <term xml:lang="fr">rhénium</term>
    </name>
    <symbol>Re</symbol>
    <identifier type="InChIKey">WUAPFZMCVAUBPE-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Re)</symbol>
      </quantity>
      <value>1100</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1400</uncertainty>
      <uncertainty type="expanded">2800</uncertainty>
      <display>1100 &amp;#177; 2800</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">osmium</term>
      <term xml:lang="fr">osmium</term>
    </name>
    <symbol>Os</symbol>
    <identifier type="InChIKey">SYQBFIAQOQZEGI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Os)</symbol>
      </quantity>
      <value>&lt;230</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">160</uncertainty>
      <uncertainty type="expanded">320</uncertainty>
      <display>&lt;230 &amp;#177; 320</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">iridium</term>
      <term xml:lang="fr">iridium</term>
    </name>
    <symbol>Ir</symbol>
    <identifier type="InChIKey">GKOZUEZYRPOHIO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Ir)</symbol>
      </quantity>
      <value>&lt;100</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">65</uncertainty>
      <uncertainty type="expanded">130</uncertainty>
      <display>&lt;100 &amp;#177; 130</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">platinum</term>
      <term xml:lang="fr">platine</term>
    </name>
    <symbol>Pt</symbol>
    <identifier type="InChIKey">BASFCYQUMIYNBI-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Pt)</symbol>
      </quantity>
      <value>&lt;80</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">90</uncertainty>
      <uncertainty type="expanded">180</uncertainty>
      <display>&lt;80 &amp;#177; 180</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">gold</term>
      <term xml:lang="fr">or</term>
    </name>
    <symbol>Au</symbol>
    <identifier type="InChIKey">PCHJSUWPFVWCPO-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Au)</symbol>
      </quantity>
      <value>&lt;300</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">100</uncertainty>
      <uncertainty type="expanded">200</uncertainty>
      <display>&lt;300 &amp;#177; 200</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">mercury</term>
      <term xml:lang="fr">mercure</term>
    </name>
    <symbol>Hg</symbol>
    <identifier type="InChIKey">QSHDDOUJBYECFT-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Hg)</symbol>
      </quantity>
      <value>&lt;50</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">70</uncertainty>
      <uncertainty type="expanded">140</uncertainty>
      <display>&lt;50 &amp;#177; 140</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">thallium</term>
      <term xml:lang="fr">thallium</term>
    </name>
    <symbol>Tl</symbol>
    <identifier type="InChIKey">BKVIYDNLLOSFOA-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Tl)</symbol>
      </quantity>
      <value>&lt;6</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1.5</uncertainty>
      <uncertainty type="expanded">3</uncertainty>
      <display>&lt;6 &amp;#177; 3</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">lead</term>
      <term xml:lang="fr">plomb</term>
    </name>
    <symbol>Pb</symbol>
    <identifier type="InChIKey">WABPQHHGFIMREM-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Pb)</symbol>
      </quantity>
      <value>&lt;2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.5</uncertainty>
      <uncertainty type="expanded">1</uncertainty>
      <display>&lt;2 &amp;#177; 1</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">bismuth</term>
      <term xml:lang="fr">bismuth</term>
    </name>
    <symbol>Bi</symbol>
    <identifier type="InChIKey">JCXGWMGPZLAOME-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Bi)</symbol>
      </quantity>
      <value>&lt;2</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">0.5</uncertainty>
      <uncertainty type="expanded">1</uncertainty>
      <display>&lt;2 &amp;#177; 1</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">thorium</term>
      <term xml:lang="fr">thorium</term>
    </name>
    <symbol>Th</symbol>
    <identifier type="InChIKey">ZSLUVFAKFWKJRC-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(Th)</symbol>
      </quantity>
      <value>&lt;1</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">1.5</uncertainty>
      <uncertainty type="expanded">3</uncertainty>
      <display>&lt;1 &amp;#177; 3</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
  <analyte>
    <name>
      <term xml:lang="en">uranium</term>
      <term xml:lang="fr">uranium</term>
    </name>
    <symbol>U</symbol>
    <identifier type="InChIKey">JFALSRSLKYAFGM-UHFFFAOYSA-N</identifier>
    <amount>
      <quantity>
        <term xml:lang="en">mass fraction</term>
        <term xml:lang="fr">fraction massique</term>
        <symbol>w(U)</symbol>
      </quantity>
      <value>270</value>
      <unit>µg/kg</unit>
      <uncertainty type="standard">345</uncertainty>
      <uncertainty type="expanded">690</uncertainty>
      <display>270 &amp;#177; 690</display>
      <type>
        <term xml:lang="en">certified</term>
        <term xml:lang="fr">certifiée</term>
      </type>
    </amount>
  </analyte>
</analytes>
