摘要
对高级氧化反应体系中活性氧化物质(ROS)的类型、贡献占比和反应途径的定性与半定量分析对于探究有机污染物的降解过程与具体机制至关重要.基于文献调研,本文总结了高级氧化体系中多种ROS的氧化还原电位、反应机制等主要特点,综述了ROS的定性和半定量分析方法,包括电子顺磁性共振技术、ROS选择性淬灭方法、化学探针法、电化学法、原位拉曼法、穆斯堡尔光谱法、同步辐射法和定量构效关系分析法,分析了其优缺点和应用场景.结果表明:①高级氧化体系中通常存在ROS的协同作用,这会在一定程度上干扰ROS的定量分析结果.②由于分析难度高、影响因素繁多,目前缺乏快速准确的ROS定量检测技术.为更加科学合理地开展有机污染降解机理探究和应用技术开发工作,今后应以ROS快速定量检测技术和原位技术为研究重点,结合模型方法等辅助手段分析高级氧化体系中的活性氧化物质暴露量或瞬态浓度及其对污染物去除的贡献,以及预测污染物去除效率等.
Qualitative and semi-quantitative analysis of the type,contributions and reaction pathways of reactive oxygen species(ROS)is crucial to explore contaminant degradation mechanisms.Based on the previous literature,this study summarized the main characteristics of ROS(redox potentials and reaction mechanisms),and reviewed the qualitative and semi-quantitative analysis methods of ROS,including electron paramagnetic resonance,quenching,chemical probe,electrochemical,in situ Raman,Mossbauer spectroscopy,synchrotron radiation and quantitative structure-activity relationship analysis methods.Their advantages,shortcomings and application scenarios were discussed.The results show that:(1)The synergistic effect of ROS usually exists in advanced oxidation systems,which will interfere with the quantitative analysis results of ROS to a certain extent.(2)Due to the high analysis difficulty and numerous influencing factors,there is a lack of rapid and accurate quantitative detection technique for ROS.In order to explore the mechanism of organic pollution degradation and develop application technologies in a more scientific and reasonable way,rapid quantitative detection technology and in situ technique for ROS should be the research focus in the future,combined with model methods to analyze the exposure amount or transient concentration of ROS in advanced oxidation systems and their contribution to pollutant removal,and to predict the efficiency of pollutant removal.
作者
周晨颖
周鹏
张鹏
孙一鸣
赖波
ZHOU Chenying;ZHOU Peng;ZHANG Peng;SUN Yiming;LAI Bo(College of Architecture and Environment,Sichuan University,Chengdu 610065,China;Sino-German Centre for Water and Health Research,Sichuan University,Chengdu 610041,China)
出处
《环境科学研究》
CAS
CSCD
北大核心
2023年第7期1255-1264,共10页
Research of Environmental Sciences
基金
国家自然科学基金项目(No.51878423,52070133)。
关键词
高级氧化技术
活性氧化物质
机理探究
分析方法
advanced oxidation technology
reactive oxygen species
mechanism exploration
analytical method
