| 吡虫啉的光解水解和土壤降 |
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| 引用本文： | 朱忠林,李伟,单正军,蔡道基.吡虫啉的光解水解和土壤降[J].生态与农村环境学报,1997(4). |
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| 作者姓名： | 朱忠林 李伟 单正军 蔡道基 |
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| 作者单位： | 国家环境保护局南京环境科学研究所 |
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| 基金项目： | “八五”国家科技攻关项目 |
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| 摘 要： | 在实验室测定了吡虫啉的光解、不同ｐＨ条件下的水解与在东北黑土等３种不同土壤中的降解。试验结果表明，在３００Ｗ低压汞灯下，吡虫啉水相溶液的光解呈一级反应动力学反应，光解半衰期为６．８１ｈ；在ｐＨ５、ｐＨ７、ｐＨ９的缓冲溶液中的水解半衰期分别为３０．６、１３．６与８．０ｄ；在东北黑土、太湖水稻土和江西红壤中的降解半衰期分别为１０．７、１１．１和４．１ｄ。
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| 关 键 词： | 吡虫啉 光解 水解 土壤降解 |
Photolysis, Hydrolysis of Imidacloprid and Its Degradation in Soil. |
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| Zhu Zhonglin et al.Photolysis, Hydrolysis of Imidacloprid and Its Degradation in Soil.[J].Journal of Ecology and Rural Environment,1997(4). |
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| Authors: | Zhu Zhonglin |
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| Abstract: | The photolysis, hydrolysis of imidacloprid in three buffer solutions with different pH values and the degradation of imidacloprid in Northeast China black soil, Jiangsu Taihu paddy soil and Jiangxi red soil were studied in laboratory. The results of the study show that the photochemical reaction of imidacloprid in aqueous solutions irradiated by 300 W low voltage mercurial lamp fitted to the first order dynamic equation, and its photolysis half life was 6.81 h. The results also show that the hydrolysis half life of imidacloprid in three buffer solutions with pH values of 5, 7 and 9 were 30.6, 13.6 and 8.0 d separately; the degradation half life of imidacloprid in Northeast China black soil, Jiangsu Taihu paddy soil and Jiangxi red soil were 10.7, 11.1 and 4.1 d separately. |
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| Keywords: | imidacloprid photolysis hydrolysis degradation in soil |
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