莠去津对土壤过氧化氢酶活性的影响研究  

Influence of atrazine on catalase activity in soil

作　　者：胡晓捷[1] 杨炜春[1] 刘维屏[1] 

机构地区：[1]浙江大学环境科学研究所,杭州310029

出　　处：《环境污染与防治》2004年第2期87-88,109,共3页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目 ( No.3 9673 42 0)

摘　　要：研究了除草剂莠去津对土壤过氧化氢酶活性的影响。试验结果表明 ,莠去津浓度不同对土壤过氧化氢酶活性影响会不同 ,随着浓度的升高 ,对过氧化氢酶活性激活作用有所增强 ,莠去津对离体过氧化氢酶有一定的激活 ;3 3 6nm处的相对荧光强度不断减弱 ,酶分子的构象发生了变化 ,过氧化氢酶分子渐趋紧密。莠去津对过氧化氢酶荧光的猝灭作用主要是由于静态猝灭引起的。Influence of atrazine on catalase activity in soils was investigated. The activity of catalase was stimulated by atrazine, with the stronger influence observed by using higher concentration. Atrazine has a little stimulation on vitro catalase activity. The conformation of catalase was changed with increasing activity at the various concentration of atrazine. It was shown that herbicide has a strong ability to quench the catalase fluorescence mainly through a static quenching procedure.;

关 键 词：过氧化氢酶 活性 莠去津 土壤 除草剂 荧光 猝灭作用 催化剂 环境保护 

分 类 号：X53[环境科学与工程—环境工程]