河南农业科学2011，Vol.40Issue(5)：100-103,4.
岩溶区土壤铁锰结核重金属元素形态分析
Analysis of Heavy Metals in Soil Fe-Mn Nodules in Karst Area
摘要
Abstract
Speciation of heavy metals in soil Fe-Mn nodules and bioavailability in karst area were studied using the sequential extraction method. The results showed that in the soil Fe-Mn nodules of A and B layers,residual fraction was the highest proportion for the elements Cd, Cr,Cu,Pb,Zn and Mn. The proportions of both organic fraction of Cr and Fe-Mn oxides fraction of Pb were more than 10.00％, and Fe-Mn oxides fraction of Mn was second only to residual fraction. Bioavailability of all heavy metals was very low. The potential availability of Mn was the highest, followed by Cr and Pb, which should be considered to prevent their pollution to environment. Speciation of heavy metals had some directive significance for soil improvement in Fe-Mn nodules in karst area.关键词
岩溶/铁锰结核/土壤/重金属/形态分析Key words
Karst/ Fe-Mn nodules/ Soil/ Heavy metals/ Speciation分类
资源环境引用本文复制引用
唐健生,苏春田,潘晓东,邹胜章,黄奇波..岩溶区土壤铁锰结核重金属元素形态分析[J].河南农业科学,2011,40(5):100-103,4.基金项目
广西科学研究与技术开发计划应用基础研究专项(桂科基0991028) （桂科基0991028）
中国地质科学院岩溶地质研究所所控项目(2009014) （2009014）
广西科学基金资助项目(桂科基0639066) （桂科基0639066）
