Cd and Pb Contents in Soil,Plants, and Grasshoppers along a Pollution Gradient in Huludao City,Northeast China |
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Authors: | Zhongsheng Zhang Xiaolin Song Qichao Wang Xianguo Lu |
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Institution: | (1) Key Laboratory of Wetland Ecology and Environment, Institute of Northeast Geography and Agroecology, Chinese Academy of Science, 130012 Changchun, Jilin Province, People’s Republic of China;(2) Graduate University of Chinese Academy of Science, Beijing, 130012, China |
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Abstract: | Cd and Pb contents in soil, plants, and two grasshopper species (Locusta migratoria manilensis and Acrida chinensis) were examined to quantify the influence ranges of zinc smelting on heavy metal contamination. Samples were collected simultaneously
from Huludao City, a chemical and nonferrous smelting base in Northeast China. Cd and Pb contamination in soil and plants
were serious. Cd and Pb contents were 13.32 and 8.83 mg/kg in L. migratoria manilensis and 16.67 and 15.00 mg/kg in A. chinensis, respectively. Correlation analysis indicated the same metal source for Cd and Pb in soil, plants, and grasshoppers. Cd and
Pb contents in soil, plants, and grasshoppers were all significantly related to distances far from the zinc smelter in good
negative logarithm model. The fitting curves indicated that the influence radius of the smelter on heavy metal contamination
was about 4,000 m for soil and plants and about 2,000 m for grasshoppers. |
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