Multi-year observations of organohalogen pesticides in the arctic atmosphere.
- Halsall, Crispin J.
- Bailey, R.
- Stern, G. A.
- Barrie, L. A.
- Muir, D. C. G.
- Fellin, P.
- Rosenberg, B.
- Rovinski, F. Y.
- Kononov, E. Y.
- Pastukhov, B. V.
DOIAbstract
Atmospheric measurements of organohalogen pesticides (OCs) have been made in both the Canadian and Russian Arctic. A full quality-controlled database of weekly samples is now available for the years 1992–94. Hexachlorobenzene (HCB) and the hexachlorocyclohexanes (HCHs) were the most predominant compounds in the atmosphere, followed by the chlordanes and endosulfan. Evidence of a seasonality in air concentrations was apparent particularly for the pesticide metabolites, compounds such as oxychlordane, heptachlor epoxide and dieldrin showing a significant positive correlation with temperature (p<0.01). An exception to this was p, p′-DDE which showed elevated levels during the winter. Large spatial differences in mean annual concentrations of m...
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