Determination of part-per-trillion levels of polychlorinated dibenzofurans and dioxins in environmental samples
The analytical method permits determinations of parts-per-trillion levels and lower of tetrachloro through octachloro congeners of dibenzo-p-dioxins and dibenzofurans in various types of biological tissues and sediments. Preliminary tests also indicated the method is applicable to determinations of tetrachloro through hexachloro congeners of ortho-unsubstituted polychlorinated biphenyls. Interferences both from biogenic and from xenobiotic substances are reduced to extremely low levels. The procedure has an extremely low susceptibility to false-positive determinations which could result from the presence of a wide variety of cocontaminants. A modular approach to contaminant enrichment has permitted the integration of seven processes into a two-step procedure, significantly reducing time requirements and the number of sample manipulations, and making the procedure amenable to automation. The reliability and accuracy of the procedure are demonstrated by the results of intralaboratory and interlaboratory studies and by successful analyses of over 200 samples of a wide variety of types.
- Research Organization:
- Columbia National Fisheries Research Lab., MO
- OSTI ID:
- 5838896
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 56:11; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400102* -- Chemical & Spectral Procedures
400104 -- Spectral Procedures-- (-1987)
ADSORPTION
AROMATICS
BENZOFURANS
BIOLOGICAL MATERIALS
CHEMICAL ANALYSIS
CHLORINATED AROMATIC HYDROCARBONS
CHROMATOGRAPHY
DATA
DIOXIN
ELECTRON SPECTROSCOPY
ENVIRONMENTAL MATERIALS
EXPERIMENTAL DATA
EXTRACTION
FURANS
GAS CHROMATOGRAPHY
HALOGENATED AROMATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOTOPE ENRICHED MATERIALS
MASS SPECTROSCOPY
MATERIALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEDIMENTS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SORPTION
SPECTROSCOPY
TRACE AMOUNTS