Yang, Mina1; Zhang, Haijing2; Chang, Fei3; Hu, Xuefeng1,2
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
2021-04-15
卷号408页码:7
关键词PhotochlorinationBenzo[a]PyreneSelf-sensitizedSaline waterSolar light
DOI10.1016/j.jhazmat.2020.124445
通讯作者Hu, Xuefeng(huxuefeng@sust.edu.cn)
英文摘要Chlorinated organic compounds are ubiquitously detected in saline waters. The photochlorination of organic compounds is one possible source, and chlorine radicals originating from other photosensitive substances have been reported to be responsible for organic compounds chlorination in previous reports. In this study, benzo[a] pyrene (BaP) chlorination in 10% acetonitrile/NaCl aqueous solution was initiated by self-sensitization of BaP, while chlorine radicals were not involved in the reaction. After 45 min of photoreaction in four seawater samples, chlorinated product (6-ClBaP) accounted for 10-17% of the fraction of transformed BaP, which was higher than that previously reported. The influences of Cl-, pH, humic acid, electron donors, and particulate matter on the formation of chlorobenzo[a]pyrene were systematically investigated. A self-sensitized photochlorination reaction mechanism was proposed as follow: photoexited BaP was activated to singlet state and then transformed to triplet state through inter-system crossing. Then the excited triplet state and oxygen formed [(BaP)-Ba-3*-O-3(2)] or [BaP-O-1(2)] complex, which further reacted with Cl- to produce 6-ClBaP.
资助机构National Natural Science Foundation of China; Shaanxi Thousand Talents Plan-Youth Program Scholars
收录类别SCI
语种英语
研究领域[WOS]Engineering; Environmental Sciences & Ecology
WOS记录号WOS:000620463700001
引用统计被引频次：1[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/27427
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者Hu, Xuefeng作者单位1.Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
3.Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
推荐引用方式
GB/T 7714Yang, Mina,Zhang, Haijing,Chang, Fei,et al. Self-sensitized photochlorination of benzo[a]pyrene in saline water under simulated solar light irradiation[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,408:7.
APAYang, Mina,Zhang, Haijing,Chang, Fei,&Hu, Xuefeng.(2021).Self-sensitized photochlorination of benzo[a]pyrene in saline water under simulated solar light irradiation.JOURNAL OF HAZARDOUS MATERIALS,408,7.
MLAYang, Mina,et al."Self-sensitized photochlorination of benzo[a]pyrene in saline water under simulated solar light irradiation".JOURNAL OF HAZARDOUS MATERIALS 408(2021):7.
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