Abstract
In China's largest city, Shanghai, dry deposition fluxes of Cd, Pb, As and Hg were 137, 19354, 2897 and 9.4μgm−2a−1, respectively in an urban area, intermediate in a suburban area, and 51.7, 5311, 1703 and 7.3μgm−2a−1, respectively in a rural area. Enrichment factors were Cd>Pb>As>Hg. Seasonal variations of metals differed: Pb and As were dominated by fossil fuel combustion, Cd was related to industrial pollution, and natural source controlled Hg levels.
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