CASS-7: Nearshore Seawater Certified Reference Material for Trace Metals and other Constituents

Alternative title

CASS-7 : Matériau de référence certifié d'eau de mer côtière pour les métaux à l’état de traces et autres constituants

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File	Format	Size
View certificate (English)	PDF	180 KiB
View certificate (French)	PDF	187 KiB
View Safety Data Sheet (English)	PDF	127 KiB
View Safety Data Sheet (French)	PDF	295 KiB
View analyte data	XML	91 KiB

DOI

Resolve DOI: https://doi.org/10.4224/crm.2025.cass-7

Author

Search for: Brophy, Christine¹ORCID identifier: https://orcid.org/0000-0001-9908-9858; Search for: Nadeau, Kenny¹; Search for: Yang, Lu¹ORCID identifier: https://orcid.org/0000-0002-6896-8603; Search for: Pihillagawa Gedara, Indumathi¹; Search for: Meija, Juris¹ORCID identifier: https://orcid.org/0000-0002-3349-5535; Search for: Pagliano, Enea¹ORCID identifier: https://orcid.org/0000-0001-9755-8737; Search for: McRae, Garnet¹; Search for: Mester, Zoltan¹ORCID identifier: https://orcid.org/0000-0002-2377-2615; Search for: Grinberg, Patricia¹ORCID identifier: https://orcid.org/0000-0002-1167-6474

Affiliation

National Research Council of Canada

Format

3D, Material

Material type

Matrix material

Subject

Canadian reference material; CASS-7; trace metals; nearshore seawater

Abstract

CASS-7 is a nearshore seawater Certified Reference Material (CRM) prepared at the National Research Council of Canada (NRC) with information on trace element content and other constituents. A unit of CASS-7 consists of approximately 200 mL of seawater. This material is intended for use in the method development, validation, and quality control for the analysis of trace and matrix constituents in seawater matrices.

Analytes

View analytes

Analyte	Quantity	Value	Expanded uncertainty	Unit	Type
boron	mass fraction	4010	100	µg/kg	certified
boron	mass concentration	4090	100	µg/L	certified
cadmium	mass fraction	0.0213	0.0018	µg/kg	certified
cadmium	mass concentration	0.0217	0.0018	µg/L	certified
cobalt	mass fraction	0.0659	0.0052	µg/kg	certified
cobalt	mass concentration	0.0672	0.0052	µg/L	certified
copper	mass fraction	0.520	0.032	µg/kg	certified
copper	mass concentration	0.530	0.032	µg/L	certified
iron	mass fraction	1.53	0.12	µg/kg	certified
iron	mass concentration	1.56	0.12	µg/L	certified
lead	mass fraction	0.0104	0.0040	µg/kg	certified
lead	mass concentration	0.0106	0.0040	µg/L	certified
manganese	mass fraction	2.18	0.12	µg/kg	certified
manganese	mass concentration	2.22	0.12	µg/L	certified
molybdenum	mass fraction	8.96	0.52	µg/kg	certified
molybdenum	mass concentration	9.15	0.52	µg/L	certified
nickel	mass fraction	0.410	0.040	µg/kg	certified
nickel	mass concentration	0.418	0.040	µg/L	certified
uranium	mass fraction	2.86	0.42	µg/kg	certified
uranium	mass concentration	2.92	0.42	µg/L	certified
zinc	mass fraction	1.24	0.18	µg/kg	certified
zinc	mass concentration	1.27	0.18	µg/L	certified
arsenic	mass fraction	1.02	0.10	µg/kg	reference
arsenic	mass concentration	1.04	0.10	µg/L	reference
chromium	mass fraction	0.098	0.016	µg/kg	reference
chromium	mass concentration	0.100	0.016	µg/L	reference
vanadium	mass fraction	0.49	0.12	µg/kg	reference
vanadium	mass concentration	0.50	0.12	µg/L	reference
cerium	mass fraction	0.005		µg/kg	information
cerium	mass concentration	0.005		µg/L	information
dysprosium	mass fraction	0.0014		µg/kg	information
dysprosium	mass concentration	0.0014		µg/L	information
erbium	mass fraction	0.0014		µg/kg	information
erbium	mass concentration	0.0014		µg/L	information
europium	mass fraction	0.002		µg/kg	information
europium	mass concentration	0.002		µg/L	information
gadolinium	mass fraction	0.002		µg/kg	information
gadolinium	mass concentration	0.002		µg/L	information
holmium	mass fraction	0.002		µg/kg	information
holmium	mass concentration	0.002		µg/L	information
lanthanum	mass fraction	0.007		µg/kg	information
lanthanum	mass concentration	0.007		µg/L	information
lutetium	mass fraction	0.0004		µg/kg	information
lutetium	mass concentration	0.0004		µg/L	information
neodymium	mass fraction	0.004		µg/kg	information
neodymium	mass concentration	0.004		µg/L	information
praseodymium	mass fraction	0.002		µg/kg	information
praseodymium	mass concentration	0.002		µg/L	information
samarium	mass fraction	0.004		µg/kg	information
samarium	mass concentration	0.004		µg/L	information
terbium	mass fraction	0.0003		µg/kg	information
terbium	mass concentration	0.0003		µg/L	information
thulium	mass fraction	0.0002		µg/kg	information
thulium	mass concentration	0.0002		µg/L	information
ytterbium	mass fraction	0.0016		µg/kg	information
ytterbium	mass concentration	0.0016		µg/L	information
tributyltin (as Sn)	mass fraction	0.00015		µg/kg	information
tributyltin (as Sn)	mass concentration	0.00015		µg/L	information
inorganic arsenic	mass fraction	0.49		µg/kg	information
inorganic arsenic	mass concentration	0.50		µg/L	information
monomethylarsenic (as As)	mass fraction	0.019		µg/kg	information
monomethylarsenic (as As)	mass concentration	0.020		µg/L	information
dimethylarsenic (as As)	mass fraction	0.195		µg/kg	information
dimethylarsenic (as As)	mass concentration	0.199		µg/L	information
trimethylarsenic (as As)	mass fraction	0.023		µg/kg	information
trimethylarsenic (as As)	mass concentration	0.024		µg/L	information

Period of validity

Valid from 2025-10-15 until 2035-08-31

Storage conditions

Temperature: +4 °C

Publication date

2025-10-15

Publisher

National Research Council of Canada

Access condition

Please visit http://nrc-cnrc.gc.ca/crm to obtain the material
http://nrc-cnrc.gc.ca/crm

References

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Collection

Canadian Reference Materials and Methods

Record identifier

aab02161-3e5a-43cb-89e0-97930ac3312b

Record created

2025-10-17

Record modified

2025-10-17

Date modified:: 2025-11-09