Abstract
A snow collection program was conducted in March 1982 in the mountainous regions of southwestern British Columbia. The spatial distribution of the snow's chemical composition was determined from the 18 locations sampled. In remote areas ion concentrations were low and the pH was near 5.4. There was an appreciable sea salt component on windward slopes. Nitrate and ammonium appeared to be associated in the form of ammonium nitrate. Near Georgia Strait and Vancouver the pH was depressed to near 5 with increased sulphate and nitrate concentrations. There were also enhanced levels of heavy metals in the snow. Further inland, the pH increased but not to remote values. The sulphate concentration decreased but there were still enhanced levels of nitrate.
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