作者
ZhongPing Yang, WenXi Lu, YuQiao Long
发表日期
2009
期刊
Research of Environmental Sciences
卷号
22
期号
1
页码范围
28-34
出版商
China Environmental Science
简介
In order to understand the characteristics of atmospheric heavy metal deposition (including wet and dry deposition) in Changchun City, 24 samples collected from 12 representative sites were taken using bulk deposition samplers in the heating and non-heating periods of 2006-2007 (about 382 days). The samples were analyzed for heavy metal concentration by atomic fluorescence spectrometry (AFS) and Inductively Coupled Plasma-Atomic Spectrometry (ICP-AES). The results showed that the atmospheric depositions of w (As), w (Cd), w (Cr), w (Cu), w (Hg), w (Pb) and w (Zn) were 38.9, 2.24, 92.3, 76.2, 0.27, 115.2 and 462 mg/kg, respectively, which were higher than that of the topsoil (0-20 cm). It was also found that w (Cu), w (Hg), w (Pb) and w (Zn) were generally higher in the non-heating period than in the heating period; this could be caused by the washout effect of the rainy season. Atmospheric depositions of w (As), w (Cd), w (Cr), w (Cu), w (Hg), w (Pb) and w (Zn) were 4.79, 0.25, 10.67, 8.22, 0.030, 12.31 and 48.15 mg/(m 2. a), respectively, which were higher than that in North America and the North Sea in Europe. It was also found that atmospheric depositions of w (Hg), w (Pb) and w (Zn) were generally higher in the heating periods than that in the non-heating periods. The potential impact analysis showed that the elevated atmospheric deposition of heavy metals could cause potential long-term concern on heavy metal enrichment in surface soils and potential health concerns in Changchun City, especially for Zn.
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