The role of soil arsenic fractionation in the bioaccessibility, transformation, and fate of arsenic in the presence of human gut microbiota
文献类型：期刊论文
| 作者 | Yin, Naiyi; Li, Yunpeng; Cai, Xiaolin; Du, Huili; Wang, Pengfei; Han, Zeliang; Sun, Guoxin ; Cui, Yanshan
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-01-05 |
| 卷号 | 401页码:- |
| 关键词 | Contaminated soil Arsenic Speciation Human gut microbiota XANES analysis |
| ISSN号 | 0304-3894 |
| 英文摘要 | Soil arsenic (As) fractionation and its bioaccessibility are two important factors in human health risk assessment. However, data related to the impact of As minerals on the bioaccessibility with human gut microbiota involvement are scarce. In this study, speciation analysis was determined using HPLC-ICP-MS and XANES after incubation with colon microbiota from human origin, in combination with sequential extraction. Significant increase of colon As bioaccessibility was contributed primarily from As associated with amorphous and crystalline Fe/Al (hydr)oxides. We found a high degree of transformation at higher bioaccessibility (ave. 40 % of total As), which was predominantly present as liquid-phase As. In contrast, As transformation occurred mainly in the solid phase at lower bioaccessibility ( < 5%), especially for soils containing As-S species. XANES spectroscopy revealed that As(III) increased by about 20 % in soil residues. Finally, the excreted As may be predominantly in association with (alumino)silicate minerals by SEM-EDX. It inferred that the priority sequence in As transformation by human gut microbiota was dissolved As(V), As(V) sorbed to mineral surfaces, crystalline As(V)bearing minerals and As sulfides. This study will shed new light on the role of As-bearing minerals in evaluating health risks from soil As exposure. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46092]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 作者单位 | 1.Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Naiyi,Li, Yunpeng,Cai, Xiaolin,et al. The role of soil arsenic fractionation in the bioaccessibility, transformation, and fate of arsenic in the presence of human gut microbiota[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,401:-. |
| APA | Yin, Naiyi.,Li, Yunpeng.,Cai, Xiaolin.,Du, Huili.,Wang, Pengfei.,...&Cui, Yanshan.(2021).The role of soil arsenic fractionation in the bioaccessibility, transformation, and fate of arsenic in the presence of human gut microbiota.JOURNAL OF HAZARDOUS MATERIALS,401,-. |
| MLA | Yin, Naiyi,et al."The role of soil arsenic fractionation in the bioaccessibility, transformation, and fate of arsenic in the presence of human gut microbiota".JOURNAL OF HAZARDOUS MATERIALS 401(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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