研究论文
宣日成,王琪全,郑巍,刘惠君,刘维屏.吡虫啉在土壤中的吸附及作用机理研究[J].环境科学学报,2000,20(2):198-201
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
- 基金项目:国家自然科学重点基金项目(编号为39670420)
- 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=0.993);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.
- Abstract: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.
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