工业污染场地重金属的垂向分布及影响因素-以株洲霞湾港为例
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湖南省地质科学研究院,湖南省地质科学研究院,湖南省地质科学研究院

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P641.69

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国土资源部公益性行业科研专项经费项目“长株潭有色工业区重金属污染场地修复生态地球化学技术与示范”(201111016-1)


Vertical distribution of heavy metal and influencing factors in industrial contaminated sites - a case in Xiawan port of Zhuzhou
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Hunan Institute of Geology,Hunan Institute of Geology

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    摘要:

    明确工业污染场地土壤中重金属的分布和影响因素,对场地的环境治理等有重大意义。株洲霞湾港地区由地表向下为人工杂填土、粉质粘土、粉细砂、砂砾石层。As在杂填土、粉粘土、粉细砂中以残渣态为主(55%~65%);Cd以碳酸盐结合态为主(40%~70%);Pb以残渣态、铁锰结合态为主(66%~85%)。杂填土中的活动态As、Cd、Pb含量百分比大于粉粘土、粉细砂。重金属含量为杂填土>粉粘土>粉细砂≈砂砾石层。地表重金属污水只污染了杂填土层,未向下迁移。控制重金属分布的因素为①杂填土中的高岭石等使外源重金属被吸附、固化;②粉粘土上层pH为7.2~8.2,阻碍了重金属的向下迁移;③地表污水排泄通畅,粉质粘土作为隔水层阻碍了地表污水的向下渗滤。

    Abstract:

    It is importance to environmental governance studing on vertical distribution of heavy metal and influencing factors in industrial contaminated sites. In Xiawan port, down from the surface are miscellaneous fill soil, silty clay, silty sand, and gravel. Arsenic mainly exists in residua(55%~65%), Cadmium mainly in bound to carbonate(40%~70%), Pb mainly in bound to iron and manganese and residua(66%~85%). The percentages of mobile form of As, Cd, and Pb in miscellaneous fill soil are more than in silty clay and silty sand. The content of heavy metal is (miscellaneous fill soil)>(silty clay)>(silty sand)≈ (and gravel). Heavy metal wastewater polluted only miscellaneous fill soil, not down migration. The factors are adsorption of kaolinite et al. in miscellaneous fill soil, pH in upper silty clay (7.2~8.2), barrier effect of silty clay.

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项广鑫,张建新,吕焕哲. 工业污染场地重金属的垂向分布及影响因素-以株洲霞湾港为例[J]. 科学技术与工程, 2015, 15(10): .
XIANG Guang-xin, ZHANG Jian-xin, LV Huan-zhe. Vertical distribution of heavy metal and influencing factors in industrial contaminated sites - a case in Xiawan port of Zhuzhou[J]. Science Technology and Engineering,2015,15(10).

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  • 收稿日期:2014-11-17
  • 最后修改日期:2014-12-08
  • 录用日期:2014-12-29
  • 在线发布日期: 2015-04-07
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