| 引用本文: | 刘永泽,江进,马军,罗从伟,皇甫小留,郭忠凯.臭氧氧化过程中羟基自由基产率测定与分析[J].哈尔滨工业大学学报,2015,47(2):9.DOI:10.11918/j.issn.0367-6234.2015.02.002 |
| LIU Yongze,JIANG Jin,MA Jun,LUO Congwei,HUANGFU Xiaoliu,GUO Zhongkai.Determination of hydroxyl radical yields in the ozone reactions[J].Journal of Harbin Institute of Technology,2015,47(2):9.DOI:10.11918/j.issn.0367-6234.2015.02.002 |
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| 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． |
| 关键词: 臭氧 OH·产率 芳香类物质 胺类物质 烯烃类物质 |
| DOI：10.11918/j.issn.0367-6234.2015.02.002 |
| 分类号:TU991.2 |
| 基金项目:“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). |
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| Determination of hydroxyl radical yields in the ozone reactions |
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LIU Yongze, JIANG Jin, MA Jun, LUO Congwei, HUANGFU Xiaoliu, GUO Zhongkai
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(State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology), 150090 Harbin, China)
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| Abstract: |
| To investigate the hydroxyl radical (OH·) formation during ozonation, OH· yields (Φ) in the reactions of O3 with O3 reactive compounds such as electron-activated aromatic compounds and amines were determined by the “tBuOH· 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. |
| Key words: O3 OH· yield aromatic compounds amines olefins |
