加入内标物求解二苯醚OH加合物生成速率常数  

Study on the Formation Rate Constant of C_(12)H_(10)O-OH Adduct by Adding Inner-standard Substance

作　　者：叶招莲[1] 李萍[2] 毕承路[1] 侯惠奇[2] 

机构地区：[1]江苏技术师范学院,常州213001 [2]复旦大学环境科学研究所,上海200433

出　　处：《化学学报》2010年第19期2007-2012,共6页Acta Chimica Sinica

基　　金：江苏省自然科学基金(No.BK2009106)资助项目

摘　　要：往二苯醚(C12H10O)-HNO2体系中加入内标物苯(C6H6),借助苯和二苯醚与·OH自由基之间的竞争反应,分析355nm激光闪光光解C12H10O-C6H6-HNO2体系的衰减动力学曲线,结合C12H10O-OHadduct的衰减速率常数逆推C12H10O-OHadduct的生成反应速率常数.借助一种近似方法——微扰论,通过对>340nm处衰减曲线的拟合,得到C12H10O-OHadduct的生成速率常数为(1.8±0.8)×1010L·mol-1·s-1.Benzene （C6H6）, as an inner-standard substance, was added into C12H10O-HNO2 system, which would form competition reaction between C12H10O and benzene with ·OH radical. We analyzed decay kinetic curve in C12H10O-C6H6-HNO2 system under 355 nm laser flash photolysis, on the basis of which, formation rate constant of C12H10O-OH adduct was obtained by combining its decay rate constant. By means of one kind of approximate method—perturbation theory, formation rate constant of C12H10O-OH adduct was concluded to （1.8±0.8）×1010 L·mol-1·s-1 by fitting decay curve at 340 nm.

关 键 词：激光闪光光解 二苯醚OH加合物 微扰论 生成速率常数 

分 类 号：O621.25[理学—有机化学]