IMPROVEMENT OF DESORPTION OF HERBICIDE BUTACHLOR FROM SOIL VIA COMPLEXATION WITH CYCLODEXTRINS

摘要：

The effect of three cyclodextrins (CDs) on desorption of the herbicide butachlor from soil was investigated. Formation of 1:1 stoichiometric inclusion complexes of butachlor with hydroxypropyl-β-cyclodextrin (HP-β-CD) and 2-o-methyl-β-cyclodextrin (2-o-M-β-CD) was confirmed by phase solubility studies, and the calculated apparent stability constants were 126 and 2663 L mol-1, respectively. Desorption studies of butachlor previously adsorbed on the soil has been carried out in the presence of 0.01 mol L-1 CDs or 0.01 mol L-1 CaCl2 as desorbents. Compared with 0.01 mol L-1 CaCl2 solution, CDs solutions increased desorption of butachlor. The results indicate that CDs solutions can improve desorption of butachlor from soil and be potentially used for in situ remediation of butachlor-contaminated soils.

作者: Bian H T Wang Y Chen J W Cai X Y Xie Q

作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE),Department of Environmental Science and Technology,Dalian University of Technology,Linggong Road 2,Dalian 116024,China

会议类型: 国际会议

会议名称: 29th International Symposium on Halogenated Persistent Organic Pollutants(第29届国际持久性有机污染物研讨会)(2009国际二噁英大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2009-08-24（万方平台首次上网日期，不代表论文的发表时间）