In Vitro Assessment of Arsenic Release and Transformation from As(V)-Sorbed Goethite and Jarosite: The Influence of Human Gut Microbiota

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	In Vitro Assessment of Arsenic Release and Transformation from As(V)-Sorbed Goethite and Jarosite: The Influence of Human Gut Microbiota
	Yin, Naiyi; Cai, Xiaolin; Zheng, Lirong; Du, Huili; Wang, Pengfei; Sun, Guoxin; Cui, Yanshan
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2020-04-07
卷号	54 期号:7 页码:4432-4442
ISSN号	0013-936X
英文摘要	The importance of arsenic metabolism by gut microbiota has been evidenced in risk characterization from As exposures. In this study, we evaluated the metabolic potency of human gut microbiota toward As(V)-sorbed goethite and jarosite, presenting different behaviors of As release, and the solid-liquid transformation and partitioning. The release of As occurred mainly in the small intestinal phase for jarosite and in the colon phase for goethite, respectively. We found higher degree of As(V) and Fe(III) reduction by human gut microbiota in the colon digests of goethite than jarosite. Speciation analysis using high-performance liquid chromatography coupled with inductively coupled plasma mass spectrometry and X-ray absorption near-edge spectroscopy, revealed that 43.2% and 8.5% of total As was present as As(III) in the liquid and solid phase, respectively, after goethite incubation, whereas almost all generated As(III) was in the colon digests of jarosite. Therefore, As bioaccessibility in human gastrointestinal tract was predominantly contributed to Fe(III) dissolution in jarosite, and to microbial reduction of Fe(III) and As(V) in goethite. It expanded our knowledge on the role of Fe minerals in human health risk assessment associated with soil As exposures.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45119]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Yin, Naiyi,Cai, Xiaolin,Zheng, Lirong,et al. In Vitro Assessment of Arsenic Release and Transformation from As(V)-Sorbed Goethite and Jarosite: The Influence of Human Gut Microbiota[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(7):4432-4442.
APA	Yin, Naiyi.,Cai, Xiaolin.,Zheng, Lirong.,Du, Huili.,Wang, Pengfei.,...&Cui, Yanshan.(2020).In Vitro Assessment of Arsenic Release and Transformation from As(V)-Sorbed Goethite and Jarosite: The Influence of Human Gut Microbiota.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(7),4432-4442.
MLA	Yin, Naiyi,et al."In Vitro Assessment of Arsenic Release and Transformation from As(V)-Sorbed Goethite and Jarosite: The Influence of Human Gut Microbiota".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.7(2020):4432-4442.