毛磊红1，杨宏伟2，李殷3，田霄艳1
（1 上海康识食品科技有限公司，上海 201103；
2 清华苏州环境创新研究院，江苏 苏州 215163；
3 清华大学深圳研究生院，广东 深圳 518055）
摘要：臭氧氧化技术是当前饮用水处理中的主流深度处理工艺之一，农药作为新污染物的一类，在臭氧工艺的去除特性和降解路径是保障饮用水安全的重要内容之一。本研究以农药仲丁威为研究对象，通过仲丁威的反应动力学研究其臭氧工艺中的去除特性，进一步采用LC-MS/MS、GC-MS 等手段构建中间产物分析方法，研究仲丁威臭氧降解产物，在此基础上推断其降解路径。结果表明，仲丁威可以通过臭氧分解产生的羟基自由基降解，降解率约30%。在仲丁威降解实验中，臭氧降解产物用LC-MS/MS 和GC-MS 分析总共得到7 种，其降解路径主要为仲丁威上的甲基以及苯环是羟基自由基的攻击位点，甲基被氧化生成醛，并进一步生成脱甲基产物，苯环被氧化成醌。研究结果可以为饮用水中仲丁威的控制提供参考。
关键词：农药；仲丁威；臭氧；产物；降解路径
Study on Ozone Removal Characteristics and Degradation Path of Fenobucarb
MAO Lei-hong1，YANG Hong-wei2，Li Yin3，TIAN Xiao-yan1
（1 Shanghai Kangshi Food Technology Co.，Ltd.，Shanghai 201103，China；
2 Tsinghua Suzhou Institute of Environmental Innovation，Suzhou 215000，China；
3 Shenzhen Graduate School of Tsinghua University，Shenzhen 515100，China）
Abstract: Ozone oxidation technology is one of the mainstream advanced treatment processes in drinking watertreatment，and the removal characteristics and degradation paths of pesticides as a new type of pollutants in theozone process are one of the important contents to ensure the safety of drinking water. In this study，the removalcharacteristics of the ozone process were studied by the reaction kinetics of the pesticide fenobucarb，and theintermediate product analysis methods were constructed by LC-MS/MS，GC-MS and other means to study the ozonedegradation products of fenobucarb，and the degradation path was inferred on this basis. The results showed thatfenobucarb can be degraded by hydroxyl radicals produced by ozone decomposition，and the degradation rate isabout 30%. In the degradation experiment of fenobucarb，a total of seven ozone degradation products were analyzedby LC- MS/MS and GC-MS，and the degradation path was mainly that the methyl group on fenobucarb and thebenzene ring were the attack sites of hydroxyl radicals，and the methyl group was oxidized to generate aldehydes，and further generated demethylation products，and the benzene ring was oxidized to quinone. The results of the studycan provide a reference for the control of fenobucarb in drinking water.
Key words: pesticides；fenobucarb；ozone；production；path of degradation
中图分类号：TS275.1 文献标志码：A 文章编号：1007-7871（2023）05-0049-08
2023，Vol.26，No.5