模拟酸雨条件下浙江省金华市城市灰尘重金属的解析状况探究

通过网格采样法，采集了金华市一环线以内地区的20个城市灰尘样品，然后利用原子吸收分光光度计测定了城市灰尘重金属Zn、Cu、Cr和Pb在不同pH的模拟酸雨溶液浸提下的析出值，并采用地积累指数法对各重金属有效性的状况做出了评价。结果表明，研究区域内，城市灰尘重金属Zn、Vu、Cr和Pb在酸雨背景下的析出值分别处于清洁水平、轻污染水平、中等污染水平和偏中等污染水平，该区城市灰尘有效Cr和有效Pb的污染程度较高，值得关注与采取措施进行预防与整治。

Effects of Heavy Metal Emission Flux of Simulated Acid Rain on City Dust in Jinhua of Zhejiang

In order to investigate the effects of acid rain on heavy metal emission flux of city dust, twenty city dust samples were taken in jinhua city, heavy metals emission flux in city dust of simulated acid rain including Zn, Cu, Cr and Pb were tested by atomic absorption spectrometry. Index of geoaecumulation were used to assess heavy metal pollution. The result shows that pollution grade of Zn, Cu, Cr and Pb was nonpollution, light pollution, medium pollution, more than medium pollution separately.