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《Marine Geology Letters》 2010-12
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THE HEAVY METALS DISTRIBUTION PATTERN AND GEOCHEMICAL PROVINCES OF THE SURFICIAL SEDIMENTS OFFSHORE ZHEJIANG

DING Xigui1,2,YE Siyuan1,2,LU Jing1,2(1 Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources Qingdao 266071,China;2 Qingdao Institute of Marine Geology,Qingdao 266071,China)  
The geochemical features and geochemical provinces based upon As,Cr,Cu,Pb,Zn,Hg,Cd in the surficial sediments offshore Zhejiang are discussed in this paper.The results show that the distribution patterns of the seven heavy metals are similar.The heavy metals are high around the Jiaojiang estuary,Leqing Bay,Wenzhou Bay and Rui an-Cangnan offshore,but low in the Hangzhou Bay.In the study area,the content of As,Cd,Hg and Pb never exceeds the national standard,except Cr,of which the content exceeds the band 1 national standard at 218 stations,and the area with excess Cr accounts to 71.5% of the total,with 2 stations exceeding band 2 national standard.The content of Cu exceeds band 1 national standard at 90 stations and the area with excess Cu accounts to 29.5% of the total.The content of Zn exceeds band 1 national standard only at 2 stations.Facts demonstrate that hydrodynamic conditions,the source and type of sediments have important effects on the distribution of heavy metals.The authors adopted the method of R mode factor analysis as a mean and divided the whole area into three geochemical provinces: the first province rich in As,Cr,Cu,Pb,Zn,the second rich in Hg and the third rich in Cd.
【Fund】: 国家自然科学基金(40872167);; 国土资源部海洋油气资源和环境地质重点实验室开放基金(MRE200920)
【CateGory Index】: P596
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