| 甲黄隆在有机溶剂中的光解 |
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| 引用本文： | 杨曦,孟庆昱,孔令仁,王连生.甲黄隆在有机溶剂中的光解[J].环境科学,1999,20(5):66-68. |
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| 作者姓名： | 杨曦 孟庆昱 孔令仁 王连生 |
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| 作者单位： | [1]南京大学环境科学与工程系污染控制与资源化国家重点实验室 [2]南京大学环境科学与工程系污染控制与资源化国家重 |
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| 基金项目： | 国家自然科学基金,中科院土壤圈物质循环开放实验室开放基金 |
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| 摘 要： | 以中压汞灯为光源，研究了甲黄隆在甲醇和丙酮等有机溶剂中的光解动力学，结果表明均为一级反应。甲黄隆在甲醇中的光解速率与在水中相差不大，而丙酮可明显促进其光解。甲黄隆在甲醇中光解先断裂脲桥，生成磺酰胺和取代三嗪，磺酰胺继续光解生成苯甲酸甲酯和微量的硫酚。
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| 关 键 词： | 光解动力学 磺酰脲 甲黄隆 反应机理 除草剂 |
| 收稿时间： | 1998/8/31 0:00:00 |
Photolysis of Metsulfuron-Methyl in Organic Solvents |
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| Yang Xi,Meng Qingyu,Kong Lingren and Wang Liansheng.Photolysis of Metsulfuron-Methyl in Organic Solvents[J].Chinese Journal of Environmental Science,1999,20(5):66-68. |
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| Authors: | Yang Xi Meng Qingyu Kong Lingren and Wang Liansheng |
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| Institution: | State Key Lab of Pollution Control and Reuse, Dept. of Environmental Science and Engineering Nanjing University, Nanjing 210093, China;State Key Lab of Pollution Control and Reuse, Dept. of Environmental Science and Engineering Nanjing University, Nanjing 210093, China;State Key Lab of Pollution Control and Reuse, Dept. of Environmental Science and Engineering Nanjing University, Nanjing 210093, China;State Key Lab of Pollution Control and Reuse, Dept. of Environmental Science and Engineering Nanjing University, Nanjing 210093, China |
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| Abstract: | Photodegradation behaviors of metsulfuronmethyl in methanol and acetone were studied with the irradiation of mediumpressure mercury lamp.The primary degradation of metsulfuron follows a pseudofirstorder kinetics both in methanol and acetone.The degradation rate in methanol is similar to that in water,while the rate in acetone is accelerated.In methanol,metsulfuron is phtolyzed to methyl 2(aminosulfonyl)benzoate and 2methoxy4methyl6amino1,3,5triazine,then the former product is degraded to methyl benzoate and methyl 2(sulhydryl)benzoate. |
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| Keywords: | photolysis kinetics sulfonylurea metsulfuronmethyl reaction mechanism |
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