Atmospheric deposition of selected chemicals in Canada / by William M.J. Strachan. : En13-5/88-40E-PDF

"The deposition of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCs) has been observed in the rainfall and some snow samples throughout Canada since before 1980. The concentrations and areal fluxes of these compounds indicate that the atmosphere is perhaps the most important source of such substances in the aquatic and terrestrial parts of Canada as well as elsewhere. Results of investigations with PCBs, the hexachlorocyclohexanes, dieldrin, DDT and hexachlorobenzene in rain between 1983 and 1986 are presented. Estimations of the loadings arising from the observed wetfall concentrations are made and continent-wide similarities in concentrations and loadings are noted. Rainfall concentration trends in the Great lakes area in particular are described"--Abstract.

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publications.gc.ca/pub?id=9.872824&sl=1

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