Study on Flubendiamide Photolysis Kinetics and Its Mechanism

doi:10.11924/j.issn.1000-6850.casb14110157

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (10): 204-207.doi: 10.11924/j.issn.1000-6850.casb14110157

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Study on Flubendiamide Photolysis Kinetics and Its Mechanism

Zhao Jinhao, Hou Zhiguang, Liang Shuang, Lu Zhongbin

(College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118)

Received:2014-11-25 Revised:2015-03-05 Accepted:2014-12-30 Online:2015-05-05 Published:2015-05-05

Abstract

Abstract: In order to study the influence of NO₃^- and buffer solutions of different pH on flubendiamide photochemical degradation, the author measured flubendiamide photochemical degradation under different NO₃^-concentration and buffer solutions of different pH by the method of liquid distribution extract and HPLC. The results showed flubendiamide photolysis half-life in different concentrations of NO₃^- was 0.55-1.36 h under 300 W mercury lamp irradiation. The rate of flubendiamide photolysis in acidic (pH 4) solution was the fastest, then was in neutral (pH 7) solution and it was the slowest in alkaline (pH 9) solution. Flubendiamide photolysis reaction conformed to the first order reaction kinetics. NO₃^- presence could decrease flubendiamide photodegradation rate. The rate of flubendiamide photolysis in different buffer solutions was pH 4＞pH 7＞ pH 9.

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Study on Flubendiamide Photolysis Kinetics and Its Mechanism

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