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《Environmental Chemistry》 2010-02
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SPATIAL VARIABILITY AND DISTRIBUTION OF HEAVY METALS IN SOIL OF BAOSHAN DISTRICT

CHEN Yuan-yuan1,2 SUN Xiao-jing1,3 WANG Jun1 CHEN Zhen-lou1 XU Shi-yuan1(1 Key Laboratory of Geo-information Science of the Ministry of Education,East China Normal University,Shanghai,200062,China;2 State Science Talent Cultivate Base,East China Normal University,Shanghai,200062,China;3 Shanghai Environmental Monitoring Station of Baoshan District,Shanghai,200940,China)  
Geographical information system(GIS)combined with geostatistics method was applied to reveal the spatial variability of heavy metals including As,Cd,Cr,Hg and Pb in soils of Baoshan district,Shanghai city.All heavy metal elements displayed modest spatial variability.For the global trend,Cd is a single function,and the other four heavy metal elements are dual funtions.All heavy metal elements have obvious directional effect.Cr,Hg and Pb have strong spatial correlation,whereas As and Cd have moderate spatial correlation.The spatial variation of all heavy metal elements is in the order of Hg,Pb,Cr,As and Cd.The average content of As,Cd,Cr,Hg and Pb are 7.31,0.24,107.89,0.15 and 38.54 mg·kg-1 respectively,which are 0.80,1.81,1.44,1.43 and 1.51 times that of the soil background value for Shanghai.The pollution level of agricultural soil in the southern area of baoshan is worse than the northern area.For the pollution level of heavy metals in every town,Cr and Pb pollution is serious,but As is not an issue.In the dustfall survey same period,heavy metals in the dustfall are the most important sources for soil in Baoshan district.
【Fund】: 国家自然科学基金项目(70703010、40730526);; 国家基础科学人才培养基金项目(J0730534);; 宝山区环保专项资金项目
【CateGory Index】: X131.3
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