GUO Qin,PANG Su yan,JIANG Cheng chun,et al.Degradation of 2,4-Dichlorophenol by Potassium Permanganate: Oxidation Products and Tentative Mechanisms[J].China Water & Wastewater,2018,34(21):53-58.
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Degradation of 2,4-Dichlorophenol by Potassium Permanganate: Oxidation Products and Tentative Mechanisms

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第34卷 Number: 21 Page: 53-58 Column: Date of publication: 2018-10-20
Article number:
1000-4602(2018)21-0053-06
Author(s):
GUO Qin1; PANG Su yan1; 2; JIANG Cheng chun3; JIANG Jin4; MA Jun4
(1. College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China; 2. School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, China; 3. School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China; 4. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China)
Keywords:
potassium permanganate; 2; 4-dichlorophenol; LCMS/MS; oxidation product;  reaction mechanism
CLC:
YU991
Document code:
C
Abstract:
Experiments were conducted to determine the chlorinated oxidation products of 2,4-DClP by aqueous potassium permanganate using liquid chromatographytriple quadrupole mass spectrometry (LCMS/MS). The results showed that seven chlorinated oxidation products were detected by the precursor scan approach of m/z 35 and 37 developed on the basis of the natural isotope of chlorinate atom. The polymeric products Ⅰ and Ⅱ of m/z 321/323/325/327 (m/z 35), which contained four chlorine atoms, were inferred as two isomers, and they were formed by the C-O and C-C coupling of 2,4-dichlorophenoxy radicals. The polymeric product Ⅲ of m/z 287/289/291 (m/z 35), which contained three chlorine atoms, was formed by the C-O coupling of 2,4-dichlorophenoxy radicals with the release of a chlorine atom. The product Ⅳ of m/z 303/305/307 (m/z 35), which contained three chlorine atoms, was formed by the hydroxylation of product Ⅲ. The quinonetype product Ⅴ of m/z 302/303/304/305/306/307 (m/z 35), which contained three chlorine atoms, was formed by the oxidation of product Ⅳ. The products Ⅵ and Ⅶ of m/z 143 (m/z 35), which contained one chlorine atom, were two isomers, and they were formed by hydroxylation of 2,4-DClP at the chlorine substituted position. According to the phenolic coupling theory, the chlorinated polymeric products were partially detected, probably due to the difference in the coupling rates of the phenoxy radicals.

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Memo

基金项目：国家自然科学基金资助项目(51578203)
通信作者：庞素艳E-mail:psyhit@126.com
作者简介： 郭钦（1992- ），男，山西大同人，硕士研究生，研究方向为化学氧化去除水中有机污染物。
E-mail:gqfy1992@163.com
收稿日期：2018-04-21

Last Update: 2018-11-01