00000nam 2200000zi 4500 9.872824 CaOODSP 20241203113648 m o d f cr ||||||||||| 190513s1988 oncb #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/88-40E-PDF Strachan, W. M. J. author. (William Michael John), 1937- Atmospheric deposition of selected chemicals in Canada / by William M.J. Strachan. Burlington, Ontario : National Water Research Institute, Canada Centre for Inland Waters, [1988] 1 online resource (11 unnumbered pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 88-40 Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "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. Includes abstract in English and French. gccst Precipitation gccst Chemicals gccst Atmospheric emissions Canada. Environment Canada. Canada Centre for Inland Waters. National Water Research Institute (Canada) NWRI contribution ; 88-40. (CaOODSP)9.844121 PDF 964 KB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-88-40-eng.pdf