Occurrence state of co-existing arsenate and nickel ions at the ferrihydrite-water interface: Mechanisms of surface complexation and surface precipitation via ATR-IR spectroscopy

doi:10.1016/j.chemosphere.2018.04.150

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	Occurrence state of co-existing arsenate and nickel ions at the ferrihydrite-water interface: Mechanisms of surface complexation and surface precipitation via ATR-IR spectroscopy
	Wang, Chao 1,2; Cui, Yong 1; Zhang, Jinghai 1; Gomez, Mario 3; Wang, Shaofeng 2; Jia, Yongfeng 2
刊名	CHEMOSPHERE
	2018-09-01
卷号	206 页码:33-42
关键词	Arsenic Nickel Ternary Surface Complexes Surface Precipitates Ferrihydrite Annabergite
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2018.04.150
英文摘要	Arsenic and nickel are common contaminants that usually co-exist in many contaminated natural and mining environments. More research on the interaction of these two contaminants is needed such as their coordination structure and occurrence state at mineral-water interfaces. In this study, we investigated the structure of surface complexes and surface precipitates formed by co-existing As(V) and Ni(II) ions at the ferrihydrite-water interface by varying the order of adsorption processes, pH, aging time and Ni(II) concentration using attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). ATR-FTIR analysis revealed the presence of complexed As-O-Ni bonds which produced ternary surface complexes. These ternary As-O-Ni surface complexes formed through a layer by layer alternative coordination on top of the binary As-O-Fe surface site complexes of ferrihydrite. Such multilayer surface complexes formed as initial surface precipitates which were found to refine their surface structure from amorphous to crystalline phases and were a function of incubation time, coverage of multilayer surface complexes, Ni(II) concentration and pH. Our results presented here can well explain the formation process of surface precipitates on the molecular scale and are of use to forecast the fate and mobility of commonly As(V) and Ni(II) species at the ferrihydrite-water interface commonly found in natural or mine tailings water-soil environments. (C) 2018 Published by Elsevier Ltd.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000436215600006
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/106519]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
通讯作者	Jia, Yongfeng
作者单位	1.Shenyang Pharmaceut Univ, Sch Med Devices, 103 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Liaoning, Peoples R China 3.Shenyang Univ Chem Technol, 11 ST Econ & Technol Dev Zone, Shenyang 110142, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chao,Cui, Yong,Zhang, Jinghai,et al. Occurrence state of co-existing arsenate and nickel ions at the ferrihydrite-water interface: Mechanisms of surface complexation and surface precipitation via ATR-IR spectroscopy[J]. CHEMOSPHERE,2018,206:33-42.
APA	Wang, Chao,Cui, Yong,Zhang, Jinghai,Gomez, Mario,Wang, Shaofeng,&Jia, Yongfeng.(2018).Occurrence state of co-existing arsenate and nickel ions at the ferrihydrite-water interface: Mechanisms of surface complexation and surface precipitation via ATR-IR spectroscopy.CHEMOSPHERE,206,33-42.
MLA	Wang, Chao,et al."Occurrence state of co-existing arsenate and nickel ions at the ferrihydrite-water interface: Mechanisms of surface complexation and surface precipitation via ATR-IR spectroscopy".CHEMOSPHERE 206(2018):33-42.