吡虫啉在土壤中的吸附及作用机理研究  

Study on the adsorption of imidacloprid in soils and the interaction mechanism

作　　者：宣日成[1] 王琪全[1] 郑巍[1] 刘惠君 刘维屏[1] 

机构地区：[1]浙江大学化学系,杭州310027

出　　处：《环境科学学报》2000年第2期198-201,共4页Acta Scientiae Circumstantiae

基　　金：国家自然科学重点基金!项目 (编号为 3 9670 4 2 0 )

摘　　要：研究了吡虫啉在土壤中的吸附及作用机理.结果表明,吡虫啉在土壤中的吸附主要归结于土壤有机质对它的结合,其它因素影响较小,Freundlich常数Kf与OM(%)有较好的相关性(r=0993);吡虫啉能与腐殖酸作用发生电荷转移,并能与腐殖酸羟基形成氢键.The adsorption of imidacloprid in soils was investigated.Adsorption was found to be correlated with organic matter in soil and the Freundlich constant Kf=1.69+1.66× [OM](r2 =0 993) .The results of IR analysis showed the formation of hydrogen bonds and the results of ESR suggested the existence of electricity donor acceptor mechanism between imidacloprid and humicacid.

关 键 词：吡虫啉 土壤 腐殖酸 土壤监测 

分 类 号：X833[环境科学与工程—环境工程]