| 烯式吡虫啉(olefin IMI)光解及其光解产物研究 |
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| 引用本文： | 葛峰,单正军,戴亦军,陈婷,袁生.烯式吡虫啉(olefin IMI)光解及其光解产物研究[J].生态与农村环境学报,2009,25(2). |
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| 作者姓名： | 葛峰 单正军 戴亦军 陈婷 袁生 |
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| 作者单位： | 1. 环境保护部南京环境科学研究所,江苏,南京,210042
2. 南京师范大学生命科学学院,江苏,南京,210046 |
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| 基金项目： | 环境保护部环保公益性行业专项基金 |
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| 摘 要： | 烟碱类杀虫剂吡虫啉(imidacloprid,IMI)在环境中可代谢为生物活性提高10倍的烯式吡虫啉(olefin IMI).研究了olefin IMI的光稳定性、光解动力学和光解代谢途径.结果表明:olefin IMI在避光条件下较为稳定,室温下放置400 d后,olefin IMI含量仅减少3%;而在室内模拟日光条件下,olefin IMI易于分解,光解反应符合一级动力学方程(r＞0.99),半衰期为4 d.olefin IMI的光解反应存在2条主要途径:一是羟基化生成4,5-二羟基化吡虫啉,该产物进一步氧化断裂药效基团硝基亚胺基生成羰基化产物;二是直接脱去硝基基团生成胍基产物.
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| 关 键 词： | 烯式吡虫啉(olefin IMI) 光解 代谢途径 |
Photolysis of Olefin IMI and Its Photolytic Products |
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| GE Feng,SHAN Zheng-jun,DAI Yi-jun,CHEN Ting,YUAN Sheng.Photolysis of Olefin IMI and Its Photolytic Products[J].Journal of Ecology and Rural Environment,2009,25(2). |
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| Authors: | GE Feng SHAN Zheng-jun DAI Yi-jun CHEN Ting YUAN Sheng |
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| Institution: | 1.Nanjing Institute of Environmental Science;Ministry of Environmental Protection;Nanjing 210042;China;2.College of Life Science;Nanjing Normal University;Nanjing 210046;China |
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| Abstract: | A study was done on photic stability,photolytic dynamics and pathway of photolytic metabolism of olefin IMI.Results show that olefin IMI was stable in darkness.It decreased by 3% in concentration after having been kept in room temperature and darkness for 400 days.However in the laboratory under simulated sunlight,olefin IMI was unstable and easily degraded.Its photolytic reaction fitted the first-order kinetic equation(r>0.99),and its half life was figured out to be 4 days.Its photolytic reaction followed ... |
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| Keywords: | olefin IMI photolysis photolytic product |
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