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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (19): 2007-2012. 上一篇    下一篇

研究论文

加入内标物求解二苯醚OH加合物生成速率常数

叶招莲1，李萍2，毕承路1，侯惠奇*,2   

  1. (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)
  • 投稿日期:2010-03-13 修回日期:2010-10-10 发布日期:2010-05-28
  • 通讯作者: 叶招莲 E-mail:bess_ye@jstu.edu.cn
  • 基金资助:

    冰晶内部及表面的多氯联苯与活性自由基的微观反应机理研究

Study on the Formation Rate Constant of C12H10O-OH Adduct by Adding Inner-standard Substance

Ye Zhaolian1 Li Ping2 Bi Chenglu1 Hou Huiqi*,2   

  1. (1 Jiangsu Teacher s University of Technology, Changzhou 213001)
    (2 Institute of Environmental Science, Fudan University, Shanghai 200433)
  • Received:2010-03-13 Revised:2010-10-10 Published:2010-05-28
  • Contact: Zhao-Lian YE E-mail:bess_ye@jstu.edu.cn

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被引次数

1

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355 nm激光闪光光解C12H10O-C6H6-HNO2体系的衰减动力学曲线, 结合C12H10O-OH adduct的衰减速率常数逆推C12H10O-OH adduct的生成反应速率常数. 借助一种近似方法——微扰论, 通过对＞340 nm处衰减曲线的拟合, 得到C12H10O-OH adduct的生成速率常数为(1.8±0.8)×1010 L•mol－1•s－1.

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

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.

Key words: laser flash photolysis, C12H10O-OH adduct, perturbation theory, formation rate constant