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| 乙草胺在水中的光化学降解动态研究 | |
| 引用本文： | 郑和辉,叶常明,刘国辉. 乙草胺在水中的光化学降解动态研究[J]. 农药科学与管理, 2001, 22(6): 12-13 |
| 作者姓名： | 郑和辉 叶常明 刘国辉 |
| 作者单位： | 1. 中国预防医学科学院环境卫生监测所,100021 2. 中科院生态环境中心,100085 3. 北京富力特新技术公司,100101 |
| 基金项目： | 国家自然科学基金项目(编号29837170). |
| 摘 要： | 研究了乙草胺在100W中压石英汞灯的光照下的光解动态。结果表明，乙草胺在水溶液中的浓度越高，光解半衰期越长，溶液的pH越高，乙草胺越容易光解。溶液中的溶解氧对乙草胺的光解影响不大，乙草胺在空气饱和溶液中光解速度略快。在不同类型的水中，乙草胺的光解速率也不一样，乙草胺的浓度为20mg/L时，在去离子水，河水和稻田水中的光解半衰期分别为8．06，10．11，12．46min。乙草胺的主要光解产物是羟化乙胺，脱氯可能是乙草胺光解速率的决定步骤。 |
| 关 键 词： | 乙草胺 光解 光照 水 光化学降解 除草剂 |
| 修稿时间： | 2001-03-14 |
Study on Photolysis Kinetics of Acetochlor in Water |
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| Zheng Hehui. Study on Photolysis Kinetics of Acetochlor in Water[J]. Pesticide Science and Administration, 2001, 22(6): 12-13 | |
| Authors: | Zheng Hehui |
| Abstract: | The photolysis of acetochlor in water was studied under a 100W medium pressure quartz mercury vapor lamp illuminating. The photolysis half-lives were influenced by the concentration of acetochlor,pH and O2 in water had little effect in the photolysis of acetochlor,the photo-lysis rate of acetochlor was different in different water,the photolysis half_lives of 20mg/L aceochtlor in ionized water,river water and paddy water is 8.06?10.11?12.46min respectively.Hydroxy acetochlor is the main product of acetochlor photolysis. Dechlorination may be a key step of the photogradation rate of chloroacetanilide herbicides in water. |
| Keywords: | acetochlor photolysis illumination |
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