Freezing-Induced Bromate Reduction by Dissolved Organic Matter and the Formation of Organobromine Compounds

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Freezing-Induced Bromate Reduction by Dissolved Organic Matter and the Formation of Organobromine Compounds
	Hao, Zhineng; Shi, Fengqiong; Cao, Dong; Liu, Jingfu; Jiang, Guibin
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2020-02-04
卷号	54 期号:3 页码:1668-1676
ISSN号	0013-936X
英文摘要	The freezing-induced acceleration of bromate reduction by humic substances (HS) contributes to HS bromination and the formation of organobromine compounds (OBCs). Herein, we report the enhanced reduction of bromate by dissolved organic matter and the formation of large amounts of OBCs in freezing solutions. After 48 h of freezing process, 78.1-100% of bromate was reduced by DOM at different initial concentrations of bromate and DOM in acidic solutions (pH 3 and 4). Bromide was one of the main reduction products, and it accounted for 30.9-47.8% of the total bromine content. Except for bromide, a large amount of OBCs formed by brominating DOM with reactive bromine species, like hypobromite, were detected. The conversion of bromate to OBCs, calculated as the total organobromine content to the initial bromate content, ranged from 28.2 to 52.5% and was mainly dependent on the bromate/DOM content. About 110-603 species of OBCs were detected by Fourier transform ion cyclotron resonance mass spectrometry, and they were primarily highly unsaturated and phenolic compounds. By analyzing the spectral variation before and after the freezing process, we found the disappearance of 900 compounds containing only C, H, and O with a low carbon oxidation state that was regarded as the main reductant of bromate. Our findings call for further investigation of the processes and the effects of bromate formation in aqueous environments.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44697]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Hao, Zhineng,Shi, Fengqiong,Cao, Dong,et al. Freezing-Induced Bromate Reduction by Dissolved Organic Matter and the Formation of Organobromine Compounds[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(3):1668-1676.
APA	Hao, Zhineng,Shi, Fengqiong,Cao, Dong,Liu, Jingfu,&Jiang, Guibin.(2020).Freezing-Induced Bromate Reduction by Dissolved Organic Matter and the Formation of Organobromine Compounds.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(3),1668-1676.
MLA	Hao, Zhineng,et al."Freezing-Induced Bromate Reduction by Dissolved Organic Matter and the Formation of Organobromine Compounds".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.3(2020):1668-1676.