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Geochemical Characteristics of Soil Heavy Metals of Chongqing Metropolitan Economic Zone

ZHAO Li-juan et al (College of Earth Sciences,Chengdu University of Technology,Chengdu,Sichuan 610059)  
[Objective]The research aimed to study the geochemical characteristics of soil heavy metals and the relationship between soil and parent material,providing scientific basis for urban development planning and eco-environmental conservation and utilization.[Method] The soil of Chongqing metropolitan economic area had been studied to investigate the distribution and assess geochemical characteristics of the heavy metals.[Result] The results showed that the contents of As and Cr(except in Lower Jurassic) in research area were higher than the average of the lithosphere.The other heavy metals were at the similar level with the lithosphere or lower.[Conclusion] As an old industrial city,the heavy metals in deep soil was not only the inheritance of the parent rock,but also was the results of the pollution in Chongqing.The top soil was influenced and polluted badly than the deep soil.
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