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    谢晴

    • 高级工程师    
    • 主要任职:无
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 在职信息:在职
    • 所在单位:环境学院
    • 学科:环境工程
    • 办公地点:环境楼A315
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    Phototransformation of 2,4,6-tribromophenol in aqueous solution: Kinetics and photolysis products

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    论文类型:期刊论文

    第一作者:Zhao, Hong X.

    通讯作者:Zhao, HX (reprint author), Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, Minist Educ, Linggong Rd 2, Dalian 116024, Peoples R China.

    合写作者:Jiang, Jing Q.,Wang, Yan L.,Xie, Qing,Qu, Bao C.

    发表时间:2017-01-02

    发表刊物:JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING

    收录刊物:SCIE、EI、PubMed、Scopus

    卷号:52

    期号:1

    页面范围:45-54

    ISSN号:1093-4529

    关键字:2,4,6-Tribromophenol (TBP); aqueous factor; phototransformation; UV irradiation

    摘要:In this research, we studied the phototransformation of 2,4,6-tribromophenol (TBP) by UV irradiation in aqueous solution. Effects of typical environmental factors (i.e., pH and the initial concentration of TBP, Fe3+ and NO2-) were also investigated. Results showed that the transformation process followed pseudo-first-order kinetics. The transformation rate constant of TBP decreased with increasing initial concentration and increased with increasing Fe3+ and NO2- concentrations as well as increasing pH. Ten photoproducts were tentatively identified after irradiation of TBP, according to HPLC-LTQ-Orbitrap MS and GC/MS analysis. Among them, two dihydroxylated dibromobenzene compounds (di-OH-DBB) were found to be predominant over the reaction time, indicating that hydrodebromination of TBP could be the main phototransformation mechanism. In addition, the identification of eight OH-PBDEs and di-OH-PBBs suggested that photodimerization might also be a reaction pathway for TBP photochemical reactions.