农业环境科学学报2011，Vol.30Issue(4)：684-689,6.
甘氨酸-β-环糊精对土壤中铅的增溶、解吸行为研究
Enhanced Solubilization and Desorption Behavior of Lead in Soil with Glycine-β-cyclodextrin
摘要
Abstract
Clycine-β-cyclodextrin(GCD ) with high water solubility and coordination ability for heavy metal was synthesized by the reaction of β-cyclodextrin with glycine under basic condition with epichlorohydrin used as the cross-linking agent.The effects of obtained GCD on enhanced solubilization and desorption behavior of lead in soil was studied, the influence factors of lead desorption, such as pH, ionic strength,organic matter content and initial concentration of GCD, were also investigated and described in details.The results showed that GCD had obvious solubilization for lead carbonate, when the concentration of GCD reached 30 g· L-1, the aqueous lead concentration was about 7 000 mg· L-1.A high organic matter content in soil resulted in a lower desorption efficiency of GCD for lead in soil, and the desorption efficiency of lead increased with increasing pH, ionic strength and initial concentration of GCD.The data of lead desorption in soil were well fitted by the pseudo-second-order rate equation.This static desorption research provided some fundamental information for the remediation of lead contaminated soil.关键词
铅/甘氨酸-β-环糊精/增溶/解吸Key words
lead/ glycine-β-cyclodextrin/ ehanced solubilization/ desorption分类
资源环境引用本文复制引用
罗姣,王光辉,于荣..甘氨酸-β-环糊精对土壤中铅的增溶、解吸行为研究[J].农业环境科学学报,2011,30(4):684-689,6.基金项目
国家自然科学基金资助项目(40861017) （40861017）
江西省自然科学基金资助项目(2007GZH04477) （2007GZH04477）
江西省教育厅资助项目 (GJJ09261) （GJJ09261）
