【作者】 阳如春；

【导师】 万平玉；

【作者基本信息】 北京化工大学 ， 应用化学， 2005， 硕士

【摘要】 本文利用敌敌畏作为有机磷和氨基甲酸酯类农药的代表性物质,以乙酰胆碱酶抑制法测定处理前后农药的浓度来研究高铁酸钾的去除农药效果。由于乙酰胆碱酯酶抑制法测定农药浓度的最佳测定条件为pH值范围7～8,为了准确测定高铁酸钾的农药去除效果,必须消除剩余的高铁酸钾与高pH值对酶活性的影响,本文发现以CO₂作为中和剂可满足测定的要求。在确定了以3 min吸光度变化值（△A）所表示的酶活性与敌敌畏浓度（ρ）之间存在着线性关系（△A=-0.10961g ρ+0.2227）的基础上,利用酶抑制法对高铁酸钾的农药去除效果进行了测定,结果表明在20～80 mg/L敌敌畏水溶液中加入800 mg/L K₂FeO₄处理15 min可使敌敌畏含量降低到0.05 mg/L以下。 本文设计研究了高铁酸钾以及它与其他消毒试剂复配后的杀菌效果。研究结果表明,高铁酸钾对绿脓杆菌有很好的灭杀效果,200 mg/L的高铁酸钾水溶液作用5 min就可使杀菌率达到100%。高铁酸钾与盐溶液的复配使得它的杀菌效果增强,而高铁酸钾与有机溶液的复配杀菌效果变化不大。1000 mg/L高铁酸钾和0.9%氯化钠溶液复配后,对金黄色葡萄球菌作用20 min,其杀灭率可达到99.96%。更多还原

【Abstract】 In present paper, the acetylcholin esterase inhibition technology was used to study the effect of potassium ferrate （K₂FeO₄） on degradation of dichlorvos which was chose as the representative compound of organophosphorus or carbamates pesticide. It is found that CO₂ could be used as a neutralization agent to wiping off the remaining ferrate and keeping the pH value to be the optimal pH value （pH 7-8） for the acetylcholin esterase inhibition technology. Based on the linear relationship between the concentration of dichlorvos （p） and the activity of enzyme represented by the absorbency difference in 3 minutes （AA）: AA = — 0.1096lg P +0.2227, the effect of potassium ferrate on degradation of dichlorvos was measured, that is after being treated by 800 mg/L potassium ferrate for 15 minutes, the content of dichlorvos decreased from 80 mg/L to less than 0.05 mg/L.The effect of potassium ferrate or/and the co-operation with other更多还原