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1963•Journal of AOAC INTERNATIONALRequires access

A Method for the Analysis of Chlorinated Benzenes in Clams (Mercenaria mercenaria) and Oysters (Crassostrea virginica)

Nancy Beth A. Schwartz, H E Gaffney, M S Schmutzer, F D Stefano

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Abstract

Abstract A method of analysis for mixtures of chlorinated benzenes in clam (Mercenaria mercenaria) and oyster (Crassostrea virginica) samples is reported. The method involves Soxhlet extraction with n-hexane-isopropanol (1:1) for 6 hours followed by gas chromatographic separation on a Silicone gum column with an electron affinity detector. Quantities as small as 10-10 g are detectable. Average recovery of added Polystream (a mixture of chlorinated benzenes) was 99% for clam samples and 104% for oyster samples. Recoveries were based on reading the 1,2,3,4-tetrachlorobenzene peak. The relative precision for triplicate chromatograms, averaged over all levels, was ± 5%.

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Abstract A method of analysis for mixtures of chlorinated benzenes in clam (Mercenaria mercenaria) and oyster (Crassostrea virginica) samples is reported. The method involves Soxhlet extraction with n-hexane-isopropanol (1:1) for 6 hours followed by gas chromatographic separation on a Silicone gum column with an electron affinity detector. Quantities as small as 10-10 g are detectable. Average recovery of added Polystream (a mixture of chlorinated benzenes) was 99% for clam samples and 104% for oyster samples. Recoveries were based on reading the 1,2,3,4-tetrachlorobenzene peak. The relative precision for triplicate chromatograms, averaged over all levels, was ± 5%.

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Available abstract

Abstract A method of analysis for mixtures of chlorinated benzenes in clam (Mercenaria mercenaria) and oyster (Crassostrea virginica) samples is reported. The method involves Soxhlet extraction with n-hexane-isopropanol (1:1) for 6 hours followed by gas chromatographic separation on a Silicone gum column with an electron affinity detector. Quantities as small as 10-10 g are detectable. Average recovery of added Polystream (a mixture of chlorinated benzenes) was 99% for clam samples and 104% for oyster samples. Recoveries were based on reading the 1,2,3,4-tetrachlorobenzene peak. The relative precision for triplicate chromatograms, averaged over all levels, was ± 5%.

Key concepts: Mercenaria, Crassostrea, Oyster, Eastern oyster, Chromatography, Chemistry, Environmental chemistry, Fishery

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A Method for the Analysis of Chlorinated Benzenes in Clams (Mercenaria mercenaria) and Oysters (Crassostrea virginica) — Research Paper | ScholarLens