高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (5): 791.doi: 10.7503/cjcu20160933

• 物理化学 • 上一篇    下一篇

玫瑰红作用下γ-六氯环己烷在冰相中的光敏化降解

陈柏言1, 康春莉1, 武家玉1,3, 王依雪1, 郭志新1, 包思琪1, 钟宇博1, 田涛1(), 薛洪海2   

  1. 1. 吉林大学地下水资源与环境教育部重点实验室, 长春 130012
    2. 吉林建筑大学松辽流域水环境教育部重点实验室, 长春 130118
    3. 太原工业学院环境与安全工程系, 太原 030008
  • 收稿日期:2016-12-23 出版日期:2017-05-10 发布日期:2017-04-20
  • 作者简介:联系人简介: 田 涛, 男, 博士, 讲师, 主要从事光催化方面的研究. E-mail:tiantao@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 41073063, 41403101)资助

Rose Bengal-sensitized Photolysis of γ-Hexachlorocyclohexane in Ice

CHEN Baiyan1, KANG Chunli1, WU Jiayu1,3, WANG Yixue1, GUO Zhixin1, BAO Siqi1, ZHONG Yubo1, TIAN Tao1,*(), XUE Honghai2   

  1. 1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education,Jilin University, Changchun 130012, China
    2. Key Laboratory of Songliao Aquatic Environment, Ministry of Education,Jilin Jianzhu University, Changchun 130118, China
    3. Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China
  • Received:2016-12-23 Online:2017-05-10 Published:2017-04-20
  • Contact: TIAN Tao E-mail:tiantao@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.41073063, 41403101)

摘要:

考察了在玫瑰红(RB)存在下γ-六氯环己烷(γ-HCH)在冰中的光降解. 结果表明, 光敏剂RB通过其激发态[RB]*及其产生的1O2*加速了γ-HCH的光降解, RB浓度是影响光降解率最显著的因素; γ-HCH在较低初始浓度下的光敏化降解更快; 无机盐离子的种类和浓度可以改变冰表面上类液层(LLL)的比例从而影响γ-HCH的光解. 通过分析γ-HCH光降解产物提出了RB存在时冰中γ-HCH的光降解作用机理.

关键词: γ-六氯环己烷, 玫瑰红, 冰, 光降解

Abstract:

Rose bengal(RB)-sensitized photolysis of gamma-hexachlorocyclohexane(γ-HCH) in ice was investigated. The results show that the photosensitizer RB accelerate the photolysis of γ-HCH by the excited state [RB]* and its product singlet oxygen(1O2*), and RB concentration is the most significant factor affecting the photolysis rate; the sensitized photolysis of γ-HCH at lower initial concentrations on the μg/L scale is faster; the type and concentration of inorganic salts can change the proportion of liquid like layer(LLL) on the surface of ice and thus affect the photolysis of γ-HCH. Based on the results above, the photoproducts were analyzed and the sensitized photolysis mechanism of γ-HCH in the presence of RB was proposed.

Key words: γ-Hexachlorocyclohexane(γ-HCH), Rose bengal, Ice, Photosensitization Photolysis

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