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Inter-laboratory study for the certification of trace elements in seawater certified reference materials NASS-7 and CASS-6
L. Yang, K. Nadeau, J. Meija, P. Grinberg, E. Pagliano, F. Ardini, M. Grotti, C. Schlosser, P. Streu, EP. Achterberg, Y. Sohrin, T. Minami, L. Zheng, J. Wu, G. Chen, MJ. Ellwood, C. Turetta, A. Aguilar-Islas, R. Rember, G. Sarthou, M. Tonnard, H....
Jazyk angličtina Země Německo
Typ dokumentu časopisecké články
NLK
ProQuest Central
od 2013-01-01 do Před 1 rokem
Medline Complete (EBSCOhost)
od 2003-01-01 do Před 1 rokem
Health & Medicine (ProQuest)
od 2013-01-01 do Před 1 rokem
- Publikační typ
- časopisecké články MeSH
Certification of trace metals in seawater certified reference materials (CRMs) NASS-7 and CASS-6 is described. At the National Research Council Canada (NRC), column separation was performed to remove the seawater matrix prior to the determination of Cd, Cr, Cu, Fe, Pb, Mn, Mo, Ni, U, V, and Zn, whereas As was directly measured in 10-fold diluted seawater samples, and B was directly measured in 200-fold diluted seawater samples. High-resolution inductively coupled plasma mass spectrometry (HR-ICPMS) was used for elemental analyses, with double isotope dilution for the accurate determination of B, Cd, Cr, Cu, Fe, Pb, Mo, Ni, U, and Zn in seawater NASS-7 and CASS-6, and standard addition calibration for As, Co, Mn, and V. In addition, all analytes were measured using standard addition calibration with triple quadrupole (QQQ)-ICPMS to provide a second set of data at NRC. Expert laboratories worldwide were invited to contribute data to the certification of trace metals in NASS-7 and CASS-6. Various analytical methods were employed by participants including column separation, co-precipitation, and simple dilution coupled to ICPMS detection or flow injection analysis coupled to chemiluminescence detection, with use of double isotope dilution calibration, matrix matching external calibration, and standard addition calibration. Results presented in this study show that majority of laboratories have demonstrated their measurement capabilities for the accurate determination of trace metals in seawater. As a result of this comparison, certified/reference values and associated uncertainties were assigned for 14 elements in seawater CRMs NASS-7 and CASS-6, suitable for the validation of methods used for seawater analysis.
CFOS IARC University of Alaska Fairbanks Fairbanks AK 99775 7220 USA
GEOMAR Helmholtz Centre for Ocean Research Wischhofstr 1 3 24148 Kiel Germany
Institute for Chemical Research Kyoto University Gokasho Uji city Kyoto 611 0011 Japan
Institute for the Dynamics of Environmental Processes National Research Council of Italy Italy
National Research Council Canada 1200 Montreal Rd Ottawa Ontario K1A 0R6 Canada
QUASIMEME NL 6700 EC Wageningen Bornsesteeg 10 Bennekom 6721 NG Ede The Netherlands
Research School of Earth Sciences The Australian National University Canberra ACT 2601 Australia
Rosenstiel School of Marine and Atmospheric Science 4600 Rickenbacker Causeway Miami FL 33149 USA
Citace poskytuje Crossref.org
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