【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。更多还原

【Abstract】 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.;更多还原