NOAA National Status and Trends Program Twelfth Round Intercomparison Exercise Results for Trace Metals in Marine Sediments and Biological Tissues. National Status and Trends Program for marine environmental quality: Technical memo
The report summarizes the results of the Twelfth Round Intercomparison for Trace Metals in Marine Sediments and Biological Tissues under the directive of the NOAA National Status and Trends Program. A total of forty-four participants were included in the exercise, including NOAA, USEPA, state, Austrailian, Canadian, Mexican and Argentinean laboratories. Two samples were sent by NRC to each participant, a marine sediment collected on the east coast of Canada and a freeze-dried mussel 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:
- 321348
- Report Number(s):
- PB-99-123069/XAB; TRN: 90501962
- Resource Relation:
- Other Information: DN: See also PB96-183785 and PB99-119430.; PBD: Nov 1998
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
WATER POLLUTION
BIOLOGICAL INDICATORS
SEAWATER
INTERLABORATORY COMPARISONS
MUSSELS
BIOLOGICAL ACCUMULATION
SAMPLING
ALUMINIUM
CHROMIUM
IRON
NICKEL
COPPER
ZINC
ARSENIC
SELENIUM
SILVER
CADMIUM
TIN
MERCURY
LEAD
BERYLLIUM
SILICON
MANGANESE
ANTIMONY
THALLIUM