高铁酸钾对菠菜中3种有机磷农药残留降解的影响Effects of Potassium Ferrate on Degradation of Three Organophosphorous Pesticides in Spinach
刘红玉;陈振德;汪东风;王文娇;张清智;
摘要(Abstract)：
菠菜(Spinaciao leracea L.)是我国出口的重要蔬菜品种之一,其农药残留是制约我国菠菜出口的重要"技术壁垒".在露地栽培条件下,研究了叶面喷施高铁酸钾水溶液对菠菜中有机磷农药的降解作用,并探讨了高铁酸钾对菠菜相关酶活、MDA含量及品质指标的影响.结果表明,叶面喷施不同浓度的高铁酸钾(200、400、600mg·L-1)可有效降低菠菜中敌敌畏、毒死蜱和乐果等有机磷农药的残留量.随着高铁酸钾喷施浓度的增大,菠菜中敌敌畏、毒死蜱和乐果残留量显著降低;试验浓度下以600mg·L-1高铁酸钾处理的降解效果最好,可使菠菜中敌敌畏、毒死蜱和乐果的降解率达到72.43%、87.15%和75.45%.叶面喷施高铁酸钾对菠菜过氧化物酶(POD)、过氧化氢酶(CAT)活性、MDA含量以及品质指标没有明显影响.试验表明高铁酸钾具有降解有机磷农药残留的作用,在菠菜生产中将高铁酸钾作为有机磷农药残留降解制剂是可行的.
关键词(KeyWords)： 高铁酸钾;有机磷农药;农药残留;降解;菠菜
基金项目(Foundation): 青岛市自然科学基金项目(No.07-2-3-4-jch)
作者(Author): 刘红玉;陈振德;汪东风;王文娇;张清智;
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DOI:
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