||Analytical Methods for a National Study of Chemical Residues in Fish. 2. Pesticides and Polychlorinated Biphenyls.
Marquis, P. J. ;
Hanson, R. L. ;
Larsen, M. L. ;
DeVita, W. M. ;
Butterworth, B. C. ;
||Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.
Water pollution effects(Animals) ;
Chlorinated aromatic hydrocarbons ;
Test methods ;
Analytical chemistry ;
Quality assurance ;
Chemical analysis ;
Mass spectroscopy ;
Chemical residues ;
National Bioaccumulation Study ;
||Some EPA libraries have a fiche copy filed under the call number shown.
Analytical methods and a quality assurance plan have been developed to determine the concentration of a select group of bioaccumulatable chemicals in fish tissue. The analytes include Polychlorinated biphenyls (PCBs) and 21 pesticides and industrial chemicals. The methodology has been used to conduct a survey of chemical contaminants in fish from nearly 400 major watersheds in the United States. The methodology consists of the preparation of a single extract via soxhlet extraction, gel permeation and silica gel chromatography and quantification by HRGC/LRMS. The minimum level of detection for most analytes is near 1 ng/g. Rigorous quality assurance/quality control criteria have been developed to assure the generation of high quality data.