Effect of dissolved organic matters on adsorption and desorption behavior of heavy metals in a water-level-fluctuation zone of the Three Gorges Reservoir, China

doi:10.1016/j.ecoenv.2019.109695

	Effect of dissolved organic matters on adsorption and desorption behavior of heavy metals in a water-level-fluctuation zone of the Three Gorges Reservoir, China
	Huang, Yang 3,4; Fu, Chuan 2; Li, Zhe1 ; Fang, Fang 3; Ouyang, Wenjuan1 ; Guo, Jinsong 3
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2019-12-15
卷号	185 页码:7
关键词	Water-level-fluctuating zone Dissolved organic matter Cd adsorption-desorption Cr adsorption-desorption Cu adsorption-desorption
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2019.109695
通讯作者	Guo, Jinsong(guo0768@cqu.edu.cn)
英文摘要	Operation of recession and inundation in Three Gorges Reservoir (TGR) revealed a potential contribution to the migration of heavy metals in soil and fluvial systems, thus led to negative ecological impacts. The work herein investigated the concentration and speciation of three typical heavy metals (Cd, Cr and Cu) in a water-level-fluctuation zone of TGR, as well as simulated the adsorption and desorption behavior of heavy metals on soils, which aimed at elucidating the fate of heavy metals in this special area. Field investigation revealed that water level fluctuation greatly enabled the migration of heavy metals to inner or upper soil layers. Laboratory experiments showed that adsorption of Cd(II) was a chemical process and dissolved organic matters (DOM) in soils strengthened the combination of Cd(II) to soil surface which inhibited the desorption process. Cr(VI) was physically adsorbed and readily to be desorbed. DOM enabled deposition of Cr(VI) in soils. Cation exchange was dominate mechanism in Cu(II) adsorption process, whereas DOM presented positive effects on desorption of Cu (II). The results presented in this study would provide basic theory for scientific research in TGR.
资助项目	National Natural Science Foundation of China[41771520] ; National Natural Science Foundation of China[41430750] ; National Natural Science Foundation of China[51708050] ; Chengdu University of Information Technology[KYTZ201739] ; Chengdu University of Information Technology[CRF201707]
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000491218500045
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9665]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Guo, Jinsong
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Environm, Chongqing 400714, Peoples R China 2.Chongqing Three Gorges Univ, Coll Chem & Environm Engn, Chongqing 404000, Peoples R China 3.Chongqing Univ, MOE, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Chongqing 400045, Peoples R China 4.Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yang,Fu, Chuan,Li, Zhe,et al. Effect of dissolved organic matters on adsorption and desorption behavior of heavy metals in a water-level-fluctuation zone of the Three Gorges Reservoir, China[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,185:7.
APA	Huang, Yang,Fu, Chuan,Li, Zhe,Fang, Fang,Ouyang, Wenjuan,&Guo, Jinsong.(2019).Effect of dissolved organic matters on adsorption and desorption behavior of heavy metals in a water-level-fluctuation zone of the Three Gorges Reservoir, China.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,185,7.
MLA	Huang, Yang,et al."Effect of dissolved organic matters on adsorption and desorption behavior of heavy metals in a water-level-fluctuation zone of the Three Gorges Reservoir, China".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 185(2019):7.