主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报

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沈阳市新城子铬渣堆存区土壤铬污染分布及形态研究

惠秀娟1;孟雪莲2;徐成斌1;马溪平1;付保荣1   

  1. 1. 辽宁大学资源与环境学院, 辽宁 沈阳 110036;2. 辽宁大学药学院,辽宁 沈阳 110036
  • 收稿日期:2009-06-04 修回日期:2009-07-10 出版日期:2009-12-26 发布日期:2009-12-26

Cr distributions and speciation in soil at Xinchengzi chromic residue piled site of Shenyang, Liaoning province

HUI Xiu-juan1;MENG Xue-lian2;XU Cheng-bing1;MA Xi-ping1;FU Bao-rong1   

  1. 1. School of Environmental Science, Liaoning University, Shenyang 110036, China; 2. School of Pharmacy, Liaoning University, Shenyang 110036, China
  • Received:2009-06-04 Revised:2009-07-10 Online:2009-12-26 Published:2009-12-26

摘要: 采用 Tessier A连续提取法研究分析了沈阳市新城子铬渣堆存区土壤中重金属铬的污染分布和迁移转化规律。结果表明:土壤中重金属铬的5 种形态分布, 主要以残渣态和碳酸盐结合态为主,分别占总量的49.74%和21.40%,而有机结合态含量最低,占总铬含量的6.25%。不同的功能区域铬的形态分布有所不同。总体的分布特征是残渣态大于碳酸盐结合态大于交换态大于铁锰氧化态大于有机态。

关键词: 土壤, 铬污染, 生态效应, 形态分布, 沈阳市新城子区

Abstract: Cr distributions and translocation in soil were analyzed by Tessier A sequential extraction method at Xinchengzi chromic residue piled site of Shenyang, Liaoning province. The results indicate that there are five chromic speciations in soil. Of them, exchangeable speciation and carbonatic speciation account for 49.74% and 21.4% respectively, while organic speciation is only 6.25%. Chromic speciation is different in different areas. The order of Cr distribution is residual fraction> carbonatic fraction> exchangeable fraction>Fe-Mn oxides fraction>organic fraction.

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