干旱区生态环境知识资源中心(Arid): Water incubation-induced fluctuating release of heavy metals in two smelter-contaminated soils

Arid

DOI	10.1016/j.jes.2019.02.026
	Water incubation-induced fluctuating release of heavy metals in two smelter-contaminated soils
	Yang, Bin 1,2; Cao, Yunzhe 2; Ren, Jie 3; Wang, Mei 1,2; Luo, Huilong 1,2; Li, Fasheng 1,2
通讯作者	Li, Fasheng
来源期刊	JOURNAL OF ENVIRONMENTAL SCIENCES
ISSN	1001-0742
EISSN	1878-7320
出版年	2019
卷号	82 页码:14-23
英文摘要	The soil moisture regime can affect the release of heavy metals in soil. In the previous studies, slightly polluted soils or artificially contaminated soil samples were considered to investigate the effect of soil moisture. We used highly smelter-contaminated and aged soils to study the release of typical heavy metals (Cu, Zn, Cd and Pb) induced by water incubation in batch experiments with characterization via speciation and X-ray diffraction analyses (XRD). The results show that the leachable concentrations of the heavy metals increased slightly in the first 30 days, decreased drastically between 30 and 90 days, and immobilized relatively constant thereafter. The fluctuation was ascribed to the changes of soil Eh and pH, the reductive dissolution of crystalline iron oxides, the formation of new amorphous iron oxides, the absorption of dissolved organic matter and the precipitation of metal sulfide. Speciation analysis indicated that a proportion of the soil heavy metals was transformed from an exchangeable fraction to a less labile fraction after water incubation. And the presence of a lead iron oxide phase and the peak increasing of zinc sulfide were observed via XRD analyses. Finally, water incubation restrained the release of heavy metals after 180 days of incubation, and reduced the leachability of Cu, Zn, Cd and Pb by as much as 1.61%-7.21% for soil A and 0.43%-3.36% for soil B, respectively. The study findings have implications for the formulation of risk control and management strategies for heavy metals in smelter-contaminated soils. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
英文关键词	Smelter-contaminated soil Heavy metals Water incubation Release Fraction
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000468919800002
WOS关键词	ARID-ZONE SOILS ; ORGANIC-MATTER ; IRON-OXIDES ; PADDY SOIL ; SPECIATION ; CADMIUM ; REDISTRIBUTION ; ZINC ; LEAD ; PB
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216973
作者单位	1.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China; 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China; 3.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Yang, Bin,Cao, Yunzhe,Ren, Jie,et al. Water incubation-induced fluctuating release of heavy metals in two smelter-contaminated soils[J]. 北京师范大学,2019,82:14-23.
APA	Yang, Bin,Cao, Yunzhe,Ren, Jie,Wang, Mei,Luo, Huilong,&Li, Fasheng.(2019).Water incubation-induced fluctuating release of heavy metals in two smelter-contaminated soils.JOURNAL OF ENVIRONMENTAL SCIENCES,82,14-23.
MLA	Yang, Bin,et al."Water incubation-induced fluctuating release of heavy metals in two smelter-contaminated soils".JOURNAL OF ENVIRONMENTAL SCIENCES 82(2019):14-23.