%0 Journal Article %T Application of chemometrics methods for the estimation of heavy metals contamination in river sediments %A WANG Ya-wei %A YUAN Chun-gang %A JIN Xing-long %A JIANG Gui-bin %A
WANG Ya-wei %A YUAN Chun-gang %A JIN Xing-long %A JIANG Gui-bin %J 环境科学学报(英文版) %D 2005 %I %X The concentration and speciation of six heavy metals in sediments of eight sampling sites of Haihe River were investigated. The metals, namely Cd, Cu, Co, Ni, Mn and Pb were considered. By using sequential extraction(SE), the total metals were divided into five fractions: exchangeable, carbonate bound, iron/manganese oxide bound, sulfides and organic matter fraction and residual fraction. A multivariate statistical approach(principal component analysis, PCA) was used to evaluate the contamination of heavy metals by the total levels and chemical forms, respectively. The results showed that the total metals concentration(TMC) could not provide sufficient and accurate information because the mobility, bioavailability and toxicity of metals depend not only on their total concentration but also on the physicochemical form in which they occur. %K speciation %K heavy metal %K principal component analysis
化学计量法 %K 重金属污染 %K 浓度评估 %K 河流沉积 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=E68A4753D9748D37B69B436686DFB4EE&yid=2DD7160C83D0ACED&vid=BCA2697F357F2001&iid=E158A972A605785F&sid=DFBC046213B3DD86&eid=B34BDD6A690A04C0&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=2&reference_num=27