Antimony Redox Biotransformation in the Subsurface: Effect of Indigenous Sb(V) Respiring Microbiota

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 Redox Biotransformation in the Subsurface: Effect of Indigenous Sb(V) Respiring Microbiota
	Wang, Liying; Ye, Li; Yu, Yaqin; Jing, Chuanyong
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2018-02-06
卷号	52 期号:3 页码:1200-1207
ISSN号	0013-936X
文献子类	Article
英文摘要	Anaerobic microbiological antimonate [Sb(V)] respiration is a newly discovered process regulating the Sb redox transformation in soils. However, little is known about the role microbiological Sb(V) respiration plays in the fate of Sb in the subsurface, especially in the presence of sulfate and electron shuttles. Herein, we successfully enriched a Sb(V) reducing microbiota (SbRM) from the subsurface near an active Sb mine. SbRM was dominated by genus Alkaliphilus (18-36%), Clostridiaceae (17-18%), Tissierella (24-27%), and Lysinibacillus (16-37%). The incubation results showed that SbRM reduced 88% of dissolved Sb(V) to Sb(III), but the total Sb mobility remained the same as in the abiotic control, indicating that SbRM alone did not increase the total Sb release but regulated the Sb speciation in the subsurface. Micro X-ray fluorescence (mu-XRF) analysis suggested the association of Sb and Fe, and electron shuttles such as anthraquinone-2,6-disulfonic disodium salt (AQDS) markedly enhanced the Sb release due to its ability to facilitate Fe mineral dissolution. Sb L-edge and S K-edge X-ray absorption near edge structure (XANES) results demonstrated that indigenous SbRM immobilized Sb via Sb2S3 formation, especially in a sulfur-rich environment. The insights gained from this study shed new light on Sb mobilization and its risk assessment in the subsurface environment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40880]
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	Wang, Liying,Ye, Li,Yu, Yaqin,et al. Antimony Redox Biotransformation in the Subsurface: Effect of Indigenous Sb(V) Respiring Microbiota[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(3):1200-1207.
APA	Wang, Liying,Ye, Li,Yu, Yaqin,&Jing, Chuanyong.(2018).Antimony Redox Biotransformation in the Subsurface: Effect of Indigenous Sb(V) Respiring Microbiota.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(3),1200-1207.
MLA	Wang, Liying,et al."Antimony Redox Biotransformation in the Subsurface: Effect of Indigenous Sb(V) Respiring Microbiota".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.3(2018):1200-1207.