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| 臭氧氧化降解除草剂草甘膦的实验研究 | |
| 引用本文： | 申元丽,马金锋,赵旭,刘双跃,兰华春. 臭氧氧化降解除草剂草甘膦的实验研究[J]. 环境科学学报, 2011, 31(8): 1647-1652 |
| 作者姓名： | 申元丽 马金锋 赵旭 刘双跃 兰华春 |
| 作者单位： | 1. 中国科学院生态环境研究中心国家水质学重点实验室,北京100085 北京科技大学土木与环境工程学院,北京100083 2. 中国科学院生态环境研究中心国家水质学重点实验室,北京,100085 3. 北京科技大学土木与环境工程学院,北京,100083 |
| 基金项目： | 国家自然科学基金重点项目 |
| 摘 要： | 以有机磷农药草甘膦作为目标污染物,进行了臭氧氧化试验.研究了不同臭氧投量、草甘膦初始浓度、初始pH对臭氧氧化去除草甘膦的影响,并对降解途径进行了探究.实验结果表明：臭氧投量越大,草甘膦初始浓度越低,臭氧氧化草甘膦的反应速率越快;不同pH条件下,碱性体系中草甘膦的去除速率最快,中性次之,酸性体系中草甘膦的去除速率最慢;臭... |
| 关 键 词： | 草甘膦 臭氧氧化 有机磷农药 降解 |
| 收稿时间： | 2010-10-09 |
| 修稿时间： | 2011-01-10 |
Ozonation of Herbicide Glyphosate |
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| SHEN Yuanli,MA Jinfeng,ZHAO Xu,LIU Shuangyue and LAN Huachun. Ozonation of Herbicide Glyphosate[J]. Acta Scientiae Circumstantiae, 2011, 31(8): 1647-1652 | |
| Authors: | SHEN Yuanli MA Jinfeng ZHAO Xu LIU Shuangyue LAN Huachun |
| Affiliation: | 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;2. Civil and Environmental School, University of Science and Technology Beijing, Beijing 100083,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,Civil and Environmental School, University of Science and Technology Beijing, Beijing 100083 and State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
| Abstract: | In this paper, ozonation of organic phosphorus pesticide glyphosate was studied. The influence of pH, ozone dosage and initial concentration of glyphosate on the degradation of glyphosate was investigated in details. The pathway for the glyphosate degradation by ozone was also discussed. The results showed that the degradation rate of glyphosate by ozone increased with increasing ozone dosage, and decreased with increasing the initial concentration of glyphosate. In different pH cases, the removal rate of glyphosate followed in the following decreasing: basic> neutral> acidic. The degradation of glyphosate by ozone was found to be achieved by hydroxyl radicals. Intermediates of glycolic, glycline, AMPA, and orthophosphoric acid were identified to occur during the ozonation of glyphosate. AMPA accumulated in the initial reaction time and decreased subsequently. Phosphate ions accumulated along with the extension of reaction time. |
| Keywords: | GlypHosate Ozonization OrganopHospHorus pesticides degradation |
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