喹啉水溶液与羟基自由基的作用机理研究  

The Mechanism Studies on Aqueous Quinoline with OH Radical

作　　者：刘俊英[1] 汪世龙[1] 孙晓宇[1] 李文哲[1] 刘仕[1] 倪亚明[1] 王文峰[2] 姚思德[2] 

机构地区：[1]同济大学污染控制与资源化国家重点实验室,上海200092 [2]中国科学院上海原子核研究所辐射化学开放研究实验室,上海201800

出　　处：《科学技术与工程》2002年第6期65-68,共4页Science Technology and Engineering

基　　金：国家自然科学基金(20077019)资助

摘　　要：利用脉冲辐解技术对喹啉水溶液与羟基的作用机理进行了详细研究,对其瞬态吸收峰进行了归属,初步考察了这些瞬态粒子的生成和衰减行为。研究表明,·OH 与喹啉在碱性条件下反应生成 OH-加合物,生成速率常数为5.2×10^(10)mol^(-1)·s^(-1);在酸性条件下喹啉先与氢离子反应生成喹啉阳离子,它再与羟基发生加成反应,反应速率常数为7.90×10^(10)mol^(-1)·s^(-1),从而为喹啉的氧化降解提供了理论基础。Pulse radiolysis of aqueous quinoline in dilute solutions under different conditions was studied.The main characteristic peaks in these transient absorption spectra were attributed and the build-up/ decay trends of several transient species were investigated.Under alkaline conditions,the reaction of OH radical and quinoline produces OH-adducts with a rate constant of 5.5×10^(10) mol^(-1)·s^(-1);while under acid conditions,the quinoline react with H and produce cation of quinoline in the first,then the reaction of OH and the cation of quinoline produces the cation of quinoline OH-adducts with a rate constant of 7.90×10^(10) mol^(-1)·s^(-1),it can give some advice for the degradation mechanism of quinoline.

关 键 词：喹啉 脉冲辐解 瞬态吸收光谱 羟基加合物 杂环化合物 环境分析 

分 类 号：X132[环境科学与工程—环境科学]