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《Journal of Anhui Agricultural Sciences》 2007-30
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Study on Hydrolysis Kinetics of Acetamiprid

XIE Guo-hong et al(School of Municipal and Environmental Engineering,Harbin University of Technology,Harbin,Heilongjiang 150090)  
The study aimed to provide theoretical basis for the entire evaluation on acetamiprid.The hydrolysis conditions of acetamiprid in the water body with different temperatures and pH values were observed and its hydrolysis kinetics was studied through simulated test.Acetamiprid was very stable under acidic condition and couldn't be hydrolyzed nearly under neutral condition.When the pH value was equal to or over 8,the hydrolysis was accelerated and the hydrolysis speed significantly increased along with the pH value increasing.The hydrolysis process of acetamiprid accorded with the first-order kinetics equation.When the pH values were 8,9 and 10 under the temperature of 30 ℃,the half-life of acetamiprid in hydrolysis was 231,103 and 11.7 d respectively When pH values were 8,9 and 10 and the temperature increased 10 ℃,the hydrolysis speed increased by 3.8,3.1 and 2.9 times respectively,the tamperature effect coefficients of hydrolysis were 4.8,4.1 and 3.9 respectively.and the activation energy were 120.1,107.2 and 103.6 kJ/mol respectively.The hydrolysis process of acetamiprid accorded with the first-order kinetics equation,belonging to base catalysis hydrolysis.The enhancement of pH value and temperature significantly accelerated the hydrolysis of acetamiprid.
【Fund】: 河南省创新人才工程资助项目[教高(2001)513号]
【CateGory Index】: S482.3
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