臭氧氧化过程中羟基自由基产率测定与分析  

Determination of hydroxyl radical yields in the ozone reactions

作　　者：刘永泽[1] 江进[1] 马军[1] 罗从伟[1] 皇甫小留[1] 郭忠凯[1] 

机构地区：[1]城市水资源与水环境国家重点实验室(哈尔滨工业大学),哈尔滨150090

出　　处：《哈尔滨工业大学学报》2015年第2期9-12,共4页Journal of Harbin Institute of Technology

基　　金："十二五"国家科技支撑计划课题(2012BAC05B02);城市水资源与水环境重点实验室(哈尔滨工业大学)开放基金(2013DX05)

摘　　要：为研究臭氧氧化过程中OH·的产生,利用＂叔丁醇方法＂测定了芳香类、胺类、烯烃类等活性物质与O3反应过程中OH·的产率,并进一步测定了不同水体条件下O3氧化过程中的OH·产率.结果表明：芳香类物质与O3反应的OH·产率在10%-30%;胺类物质与O3反应的OH·产率在15%-35%;烯烃类物质与O3反应迅速,但基本没有OH·产生;OH-诱导O3分解产生OH·的产率为41%.在不同水体的O3氧化过程中,水中背景成分中DOC越高时OH·的产率越低,这是由于OH-与背景成分中有机活性物质相互竞争产生OH·.一般情况下,OH·的产率为地下水〉地表水〉污水厂二级出水.To investigate the hydroxyl radical（ OH·） formation during ozonation,OH· yields（ Φ） in the reactions of O3 with O3reactive compounds such as electron-activated aromatic compounds and amines were determined by the ＂t Bu OH · assay ＂. In addition,the Φ values in the ozonation of waste water effluent,surface water and groundwater were investigated. The results showed that the Φ values in the reactions of aromatic compounds,amines and olefins with ozone were in the range of 10%- 30%,15%- 35% and 0,respectively. The Φ value was about 41% in the reaction of hydroxyl ion（ OH-） with ozone. Competition of OH-with water matrix for O3 consumption resulted in lower Φ value in waters with higher content of DOC.Generally,the Φ values were in the trend of groundwater surface water waste water effluent.

关 键 词：臭氧 OH·产率 芳香类物质 胺类物质 烯烃类物质 

分 类 号：TU991.2[建筑科学—市政工程]