NOAA national status and trends program eleventh round intercomparison exercise results for trace metals in marine sediments and biological tissues. National status and trends program for marine environmental quality: Technical memo
A total of thirty-nine participants were included in the exercise, including OAA, USEPA, state, Australian, Canadian, Mexican and Argentinean laboratories. Two samples were sent by NRC to each participant, and contaminated marine sediment from Esquimalt harbor in British Columbia and a freeze-dried oyster tissue. Laboratories were also asked to analyze two certified reference materials (CRMs) MESS-2 and CRM 2976. The elements to be determined were Al, Cr, Fe, Ni, Cu, Zn, As, Se, Ag, Cd, Sn, Hg and Pb for both matrices, plus Be, Si, Mn, Sb and Tl for the sediments. An accepted mean and confidence interval was calculated for each analyte in the two unknown samples, laboratory biases were identified and an overall rating of superior, good, fair or others were assigned to each laboratory.
- Research Organization:
- National Research Council of Canada, Inst. for Environmental Research and Technology, Ottawa, Ontario (Canada); National Ocean Service, Office of Ocean Resources Conservation and Assessment, Silver Spring, MD (United States)
- OSTI ID:
- 316451
- Report Number(s):
- PB-99-119430/XAB; TRN: 90321766
- Resource Relation:
- Other Information: DN: See also PB96-183785. Sponsored by National Ocean Service, Silver Spring, MD. Office of Ocean Resources Conservation and Assessment.; PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
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