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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
2020-04-07
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:7Pages:4432-4442
AbstractThe 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.
Department土壤环境科学实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45119
Collection土壤环境科学实验室
Recommended Citation
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.
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