Abstract
This paper determined Hg and Cd contents through collecting the surface soil samples in Nanjing Liuhe Chemical Industry Park and its surrounding areas, analyzed the spatial distribution characteristics of Hg and Cd in the study area by means of ordinary Kriging, and carried out quantitative analysis for the impact of chemical industry park on the accumulation of soil heavy metals through introducing contribution rate. The results show that the chemical industry park is one of the important causes of the accumulation of Hg and Cd in the surrounding soils. In space, the closer the site is to the industrial park, the higher the accumulative content is. Wind direction has a significant effect on the diffusion of Hg, affected most greatly on the northwest, which is located downwind, with a contribution rate of 85.47%, while wind direction has no significant effect on the diffusion of Cd, affected most greatly on the north, with a contribution rate of 29.37%.
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