Evidence of atmospheric transport and deposition of organochlorine pesticides and polychlorinated biphenyls in Canada Arctic snow

Snowpack accumulation for 1985/1986 was determined at 12 sites in the Northwest Territories. Snow was melted at room temperature and the meltwater was passed through a continuous-flow, large-volume liquid phase extractor. It was analysed for organochlorine pesticides and total PCB by gas chromatogra...

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Bibliographic Details
Published inEnvironmental science & technology Vol. 23; no. 5; pp. 561 - 565
Main Authors Gregor, D J, Gummer, W D
Format Journal Article
LanguageEnglish
Published 01.01.1989
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Summary:Snowpack accumulation for 1985/1986 was determined at 12 sites in the Northwest Territories. Snow was melted at room temperature and the meltwater was passed through a continuous-flow, large-volume liquid phase extractor. It was analysed for organochlorine pesticides and total PCB by gas chromatography with electron capture detection. Lindane and the isomer alpha-HCH, comprised more than 75 per cent of the total organochlorines. These were followed in abundance by alpha-endosulfan and dieldrin. p,p'-DDE was the only DDT isomer detected consistently and it was only present at low levels. Localized clean snow falls and long-range atmospheric transport caused inter-site differences in PCB and organochlorine levels.
Bibliography:ObjectType-Article-2
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ISSN:0013-936X