Competitive adsorption behaviour of heavy metals Cd, Cu, Pb and Zn in soils

摘要：

In this study we investigated competitive adsorption of Cd (II), Cu(II), Pb(II), and Zn(II) in several acidic soils. The adsorption isotherms showed that Cu and Pb had similar but relatively higher affinity with the tested soil compared to CA and Zn, which appear to be more mobile in the soil. The calculated partitioning coefficient (kd) values were varied among the soils but correlated reasonably well with the soil pH. The general adsorption preference on soils among the four metals in single metal system is Pb≥Cu≥Zn≥Cd, and in multiple metal adsorption system is Cu≥Pb≥Zn≥Cd.

关键词： adsorption competition heavy metals partition coefficient pH soil

作者: H. Ming D. T. Lamb M. Megharaj Z. L. Chen R Naidu

作者单位: Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA 5095, Australia

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 917-918

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）