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《Environmental Chemistry》 2003-02
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THE CHEMICAL SPECIATION OF HEAVY METALS OF URBAN SOIL IN NANJING

LU Ying 1) GONG Zi-tong ZHANG Gan-lin (Institute of Soil Science,Chinese Academy of Sciences,Nanjing,210008)CollegeofResourcesandEnvironmentalScience,SouthChinaAgriculturalUniversity.  
According to sequential extraction procedures of Tessier et al.,we studied the chemical speciation of Fe,Mn,Cr,Ni,Co,V,Cu,Zn and Pb in urban soils of Nanjing in this paper.The results indicated that Fe,Mn,Cr,Ni,Co,V,Zn and Pb in Nanjing urban soils were dominated by the residual fraction,and were least present in exchangeable fraction.Cu was dominated by organic fraction in roadside soils,and was dominated by residual fraction in other urban district soils,Compared with non-urban natural soil,the proportion of residual fraction of Mn,Cu,Zn and Pb,which mainly originated from anthropogenic sources,was lower,and active fraction was higher.The proportion of different fractions of Cr,and Fe,Ni,Co and V which mainly originated from original soil materiasls,was similar in urban and non-urban soils,the proportion of residual fraction was high,and active fraction was very low.
【Fund】: 国家自然科学基金重点项目 (40 2 3 5 0 5 4 );; 中国科学院知识创新工程重要方向性项目 (KZCX3 SW 4 2 7)项目
【CateGory Index】: X53
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