| Autor: |
Chiu CH; Analysis and Air Quality Division, Environmental Technology Centre, Environment Canada, Ottawa, Ontario., Turle R, Poole G, Thibert B, Brubaker WW Jr, Schantz MM, Wise SA |
| Jazyk: |
angličtina |
| Zdroj: |
Fresenius' journal of analytical chemistry [Fresenius J Anal Chem] 2001 Feb; Vol. 369 (3-4), pp. 356-63. |
| DOI: |
10.1007/s002160000554 |
| Abstrakt: |
Due to the limited number of environmental matrix certified reference materials (CRMs) with assigned values for natural levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), an interlaboratory study was undertaken by the National Institute of Standards and Technology (NIST) and Environment Canada to establish reference concentration values for selected PCDD/Fs in two well-characterized NIST Standard Reference Materials (SRMs): SRM 1649a (Urban Dust) and SRM 1944 (New York/New Jersey Waterway Sediment). Results from 14 laboratories were used to provide reference values for the seventeen 2, 3, 7, 8-substituted PCDD/F congeners, the totals for individual tetra- through hepta-substituted PCDD/F homologues, and the total amount of tetra- through hepta-substituted PCDD/Fs. The mass fractions for the individual 2, 3, 7, 8-substituted congeners range from approximately 0.01 microg/kg to 7 microg/kg dry mass. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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