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九龙江河口表层沉积物中重金属污染评价及来源

王 帅 胡恭任 于瑞莲 余伟河 周楚凡

王 帅, 胡恭任, 于瑞莲, 余伟河, 周楚凡. 九龙江河口表层沉积物中重金属污染评价及来源[J]. 环境科学研究, 2014, 27(10): 1110-1118.
引用本文: 王 帅, 胡恭任, 于瑞莲, 余伟河, 周楚凡. 九龙江河口表层沉积物中重金属污染评价及来源[J]. 环境科学研究, 2014, 27(10): 1110-1118.
WANG Shuai, HU Gong-ren, YU Rui-lian, YU Wei-he, ZHOU Chu-fan. Pollution Assessment and Source Analysis of Heavy Metals in Surface Sediments from Jiulong River Estuary[J]. Research of Environmental Sciences, 2014, 27(10): 1110-1118.
Citation: WANG Shuai, HU Gong-ren, YU Rui-lian, YU Wei-he, ZHOU Chu-fan. Pollution Assessment and Source Analysis of Heavy Metals in Surface Sediments from Jiulong River Estuary[J]. Research of Environmental Sciences, 2014, 27(10): 1110-1118.

九龙江河口表层沉积物中重金属污染评价及来源

基金项目: 国家自然科学基金项目(210770361);福建省自然科学基金项目(2011J01273);华侨大学2013年福建省大学生创新创业训练计划项目(201310385015)

Pollution Assessment and Source Analysis of Heavy Metals in Surface Sediments from Jiulong River Estuary

  • 摘要: 采用电感耦合等离子体质谱(ICP-MS)法测定了九龙江河口表层沉积物中24种重金属的质量分数,并采用地累积指数法和潜在生态风险指数法对该水域表层沉积物重金属的污染程度和潜在生态风险进行评价和分析. 结果表明,沉积物中重金属质量分数为w(Fe)>w(Ti)>w(Mn)>w(Ba)>w(Zn)>w(Sc)>w(Co)>w(Rb)>w(Y)>w(Ni)>w(Cr)>w(Pb)>w(Cu)>w(Th)>w(Sr)>w(V)>w(Li)>w(U)>w(Cs)>w(Bi)>w(Cd)>w(Sb)>w(Mo)>w(Hg),其中w(Cd)、w(Sc)、w(Bi)、w(Co)、w(Ni)、w(Zn)、w(Hg)和w(Cu)远高于背景值,说明九龙江河口表层沉积物中上述元素已存在一定程度的富集. 九龙江河口表层沉积物中Cd的Igeo(地累积指数)最高,属于偏重度污染;重金属的潜在生态危害顺序为Cd>Hg>Co>Ni>Cu>Zn>Pb>Cr>Mn>V,其中Cd的潜在生态危害属极强水平,Hg属较强水平. 多元统计分析(因子分析和聚类分析)结果表明,该河口沉积物中重金属污染来源主要有农业生产活动与自然源的复合污染、燃煤污染和采矿污染,其贡献率分别为48.81%、21.51%和13.72%.

     

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  • 收稿日期:  2013-11-13
  • 修回日期:  2014-05-26
  • 刊出日期:  2014-10-25

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