| 敌草快在水溶液中的光解动力学研究 |
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| 引用本文： | 彭娟莹,杨仁斌. 敌草快在水溶液中的光解动力学研究[J]. 环境科学与管理, 2012, 37(2): 45-47 |
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| 作者姓名： | 彭娟莹 杨仁斌 |
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| 作者单位： | 1. 湖南长沙环境保护职业技术学院,湖南长沙,410004
2. 湖南农业大学环境科学保护研究所,湖南长沙,410128 |
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| 基金项目： | 农业部农药残留基金项目（RS155） |
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| 摘 要： | 常温常压条件下,用500 w高压汞灯和太阳光分别照射处理敌草快水溶液,考察光照和初始浓度对敌草快在水溶液中光降解的影响。研究表明,分别用500 w高压汞灯和太阳光照射下,敌草快的光解反应均符合一级动力学规律,降解半衰期分别为0.11 d和240.63 d;敌草快的初始浓度越大,其光解率越小,光解率与其初始浓度呈负相关。
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| 关 键 词： | 除草剂 敌草快 光解动力学 |
Photolysis Kinetics of Diquat in Water |
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| Peng Juanying,Yang Renbin. Photolysis Kinetics of Diquat in Water[J]. Environmental Science and Management, 2012, 37(2): 45-47 |
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| Authors: | Peng Juanying Yang Renbin |
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| Affiliation: | 1.Changsha Environmental Protection College,Changsha 410004,China; 2.Institute of Agro-Environmental Protection,Hunan Agricultural University,Changsha 410128,China) |
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| Abstract: | Diquat in water was irradiated at room temperature by a 500 w high pressure mercury lamps and sunlight,respectively.Influence of light and initial concentration of diquat on the photolysis was studied.The results showed that under the irradiation of 500 w high pressure mercury lamps and sunlight,the photolysis complied with first-order kinetics.The photolysis half-lives are 0.11 and 240.63d,respectively.The higher the initial diquat concentration was,the slower the photolysis rate became.The photolysis rate and the initial concentration are correlated negatively. |
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| Keywords: | herbicide diquat photolysis |
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