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Original Articles

Widespread Occurrence of the Pesticide Toxaphene in Canadian East Coast Marine Fish

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Pages 117-126 | Received 05 Jul 1982, Accepted 02 Sep 1982, Published online: 13 Dec 2006
 

Abstract

Chromatographic and chemical confirmatory evidence is presented for the presence of residues of toxaphene, a polychlorinated camphene pesticide, in herring (Clupea harengus harengus) and cod (Gadus morhua) from widely-separated areas of the Canadian east cost. Toxaphene residues were not detected in a sample of deep-sea scallops (Placopecten magellanicus). Toxaphene was determined by capillary gas chromatography following a combination of chromatography and fuming nitric-concentrated sulfuric acid cleanup, a procedure which greatly simplified the capillary gas chromatograms and eliminated many co-extractives. Concentrations in the fish tissues ranged from 0.4 to 1.1 μg/g on a wet weight basis and from 2.4 to 12 μg/g on a fat weight bais. These data indicate widespread contamination of the marine environment by chlorinated camphenes.

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