Self-sensitized photochlorination of benzo[a]pyrene in saline water under simulated solar light irradiation

doi:10.1016/j.jhazmat.2020.124445

	Self-sensitized photochlorination of benzo[a]pyrene in saline water under simulated solar light irradiation
	Yang, Mina 1; Zhang, Haijing 2; Chang, Fei 3; Hu, Xuefeng1,2
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
	2021-04-15
卷号	408 页码:7
关键词	Photochlorination Benzo[a]Pyrene Self-sensitized Saline water Solar light
DOI	10.1016/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：9[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.cn/handle/133337/27427
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学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 7714	Yang, 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.
APA	Yang, 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.
MLA	Yang, 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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