Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice

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

	Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice
	Okkenhaug, Gudny ; Zhu, Yong-Guan ; He, Junwen ; Li, Xi ; Luo, Lei ; Mulder, Jan
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2012
卷号	46 期号:6 页码:3155－3162
ISSN号	0013-936X
中文摘要	Foods produced on soils impacted by antimony (Sb) mining activities are a potential health risk due to plant uptake of the contaminant metalloids (Sb) and arsenic (As). Here we report for the first time the chemical speciation of Sb in soil and porewater of flooded paddy soil, impacted by active Sb mining, and its effect on uptake and speciation in rice plants (Oryza sativa L. cv Jiahua). Results are compared with behavior and uptake of As. Pot experiments were conducted under controlled conditions in a climate chamber over a period of 50 days. In pots without rice plants, flooding increased both the concentration of dissolved Sb (up to ca. 2000 mu g L-1) and As (up to ca. 1500 mu g L-1). When rice was present, Fe plaque developing on rice roots acted as a scavenger for both As and Sb, whereby the concentration of As, but not Sb, in porewater decreased substantially. Dissolved Sb in porewater, which occurred mainly as Sb(V), correlated with Ca, indicating solubility governed by Ca antimonate. No significant differences in bioaccumulation factor and translocation factor between Sb and As were observed. Greater relative concentration of Sb(V) was found in rice shoots compared to rice root and porewater, indicating either a preferred uptake of Sb(V) or possibly an oxidation of Sb(III) to Sb(V) in shoots. Adding soil amendments (olivine, hematite) to the paddy soil had no effect on Sb and As concentrations in porewater.
WOS记录号	WOS:000301630200017
公开日期	2014-11-04
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7765]
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	Okkenhaug, Gudny,Zhu, Yong-Guan,He, Junwen,et al. Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2012,46(6):3155－3162.
APA	Okkenhaug, Gudny,Zhu, Yong-Guan,He, Junwen,Li, Xi,Luo, Lei,&Mulder, Jan.(2012).Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice.ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(6),3155－3162.
MLA	Okkenhaug, Gudny,et al."Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.6(2012):3155－3162.