| 水中有机磷农药二嗪农的臭氧化降解机制及影响因素 |
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| 引用本文： | 吴继国,周宏伟,蓝崇钰,栾天罡.水中有机磷农药二嗪农的臭氧化降解机制及影响因素[J].湖北预防医学杂志,2008,19(5):4-7. |
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| 作者姓名： | 吴继国 周宏伟 蓝崇钰 栾天罡 |
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| 作者单位： | [1]南方医科大学公共卫生与热带医学学院环境卫生学系,广州510515 [2]中山大学生命科学学院／生物防治国家医学院环境卫生学系,广州510515 |
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| 摘 要： | 目的臭氧是一种清洁高效的饮用水消毒剂，并能氧化水中有机污染物而不产生消毒副产物，广泛地用于饮用水处理。方法臭氧与有机磷农药二嗪农反应后，采用GC-MS对中间产物进行定性分析，用HPLC监测二嗪农的残留量和中间产物的生成量，研究二嗪农的臭氧降解动力、机制及影响因素。结果二嗪农的臭氧降解由臭氧直接氧化和羟基自由基间接氧化共同作用，并遵循假一级动力学。降解受离子清除剂与溶液pH的影响。加入50mmol／L的离子清除剂和降低溶液pH都使二嗪农的臭氧降解速率常数明显减小。结论通过GC-MS分析，确定了二嗪氧磷为二嗪农的臭氧化中间产物，提高溶液pH有利于二嗪氧磷进一步降解，而加入离子清除剂则不利于二嗪氧磷的降解。
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| 关 键 词： | 臭氧 二嗪农 降解机制 中间产物 |
Degradation of organophosphorus pesticide diazinon in water by ozonation |
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| WU Ji-guo,ZHOU Hong-wei.Degradation of organophosphorus pesticide diazinon in water by ozonation[J].Hubei Journal of Preventive Medicine,2008,19(5):4-7. |
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| Authors: | WU Ji-guo ZHOU Hong-wei |
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| Institution: | WU Ji-guo,ZHOU Hong-wei. Department of Environmental Health Science,School of Public Health , Tropical Medicine,Southern Medical University,Guangzhou 510515,China,LAN Chong-yu,LUAN Tian-gang. School of Life Science/State Key Laboratory of Biocontrol,Sun Yat-sen University,Guangzhou 510275 |
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| Abstract: | Objective Ozone was widely used in drinking water treatment for sanitary purpose.Ozone could oxidate organic pollutants in drinking water without forming any disinfection by-products.Methods Degradation of organophosphorus pesticide diazinon by ozonation was investigated for application of ozone to eliminate diazinon pollution.Diazinon was oxidated by bubbling ozone into a cylindrical glass reactor.GC/MS was used to qualitatively indentify ozonated intermediate of diazinon,and HPLC was used to quantitativel... |
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| Keywords: | Ozone Diazinon Degradation Intermediate |
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