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Position: Home > Articles > Study on Flubendiamide Photolysis Kinetics and Its Mechanism Chinese Agricultural Science Bulletin 2015,31 (10) 204-207

氟苯虫酰胺光解动力学及机理研究

作  者:
赵金浩;侯志广;杨航;梁爽;逯忠斌
单  位:
吉林农业大学资源与环境学院;松辽流域水资源保护局松辽流域水环境监测中心
关键词:
氟苯虫酰胺;光解;硝酸根离子;p H
摘  要:
为研究硝酸根离子和不同p H缓冲溶液对氟苯虫酰胺的光化学降解行为的影响,采用液液分配提取、高效液相色谱法测定在不同浓度的硝酸根离子存在时和不同p H缓冲溶液中氟苯虫酰胺的光解动态。研究结果表明,在300 W汞灯的照射下,氟苯虫酰胺在不同浓度硝酸根离子溶液中的光解半衰期为0.55~1.36 h;氟苯虫酰胺在酸性(p H 4)条件下光解速率最快,在中性(p H 7)条件下次之,在碱性(p H 9)条件下光解速率最慢。氟苯虫酰胺的光解反应符合一级反应动力学规律;硝酸根离子会抑制氟苯虫酰胺的光解;氟苯虫酰胺在不同缓冲溶液中的光解速率顺序为p H 4>p H 7>p H 9
译  名:
Study on Flubendiamide Photolysis Kinetics and Its Mechanism
作  者:
Zhao Jinhao;Hou Zhiguang;Yang Hang;Liang Shuang;Lu Zhongbin;College of Resource and Environmental Science, Jilin Agricultural University;Songliao River Basin Water Resources Protection Bureau Water Environment Monitoring Center of Songliao Basin;School of Resources and Environment, Jilin University;
关键词:
flubendiamide;;photolysis;;NO3-;;pH
摘  要:
In order to study the influence of NO3-and buffer solutions of different p H on flubendiamidephotochemical degradation, the author measured flubendiamide photochemical degradation under differentNO3-concentration and buffer solutions of different p H 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 hunder 300 W mercury lamp irradiation. The rate of flubendiamide photolysis in acidic(p H 4) solution was thefastest, then was in neutral(p H 7) solution and it was the slowest in alkaline(p H 9) solution. Flubendiamidephotolysis reaction conformed to the first order reaction kinetics. NO3-presence could decrease flubendiamidephotodegradation rate. The rate of flubendiamide photolysis in different buffer solutions was p H 4>p H 7>p H 9.

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