Iron(III) reducing bacteria immobilise antimonite by respiring elemental sulfur
文献类型：期刊论文
| 作者 | Ye, L.; Jing, C. |
| 刊名 | GEOCHEMICAL PERSPECTIVES LETTERS
 |
| 出版日期 | 2022-05-05 |
| 卷号 | 21期号:0页码:37-41 |
| 关键词 | IRON SOIL MOBILITY TRANSFORMATIONS MOLYBDENUM RELEASE WATERS |
| ISSN号 | 2410-339X |
| 英文摘要 | Iron(III) reducing bacteria (IRB) are best known and most influential drivers for mobi-lising metal(loid)s via reductive dissolution of iron(III)-containing minerals. Our study challenges this preconception and found that IRB immobilise metal(loid)s by respiring elemental sulfur (S-0) even when Fe(III) reduction is prevailing under mildly acidic conditions. Antimony (Sb), a toxic contaminant, was chosen as an example of metal(loid)s. Antimonite-adsorbed goethite was incubated with Shewanella oneidensis MR-1, a widely distributed IRB, in the presence of S-0 at pH 6.5. The results show that although the extent of Fe(III) reduction (>100 mu mol) was over ten times greater than that of S-0 reduction (<8 mu mol), it was S-0 reduction that immobilised Sb through Sb2S3 precipitation. Further, the thermodynamic calculation suggests that such great impacts of marginal S-0 reduction can be extended to other metal(loid)s via the formation of soluble thio-species or sulfide precipitates. This study redefines the role of IRB in the environmental fate of metal(loid)s, highlighting the strong impacts from the marginal S-0 reduction over the central Fe(III) reduction. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47560]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 2.Shandong Univ, Shandong Key Lab Environm Proc & Hlth, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, L.,Jing, C.. Iron(III) reducing bacteria immobilise antimonite by respiring elemental sulfur[J]. GEOCHEMICAL PERSPECTIVES LETTERS,2022,21(0):37-41. |
| APA | Ye, L.,&Jing, C..(2022).Iron(III) reducing bacteria immobilise antimonite by respiring elemental sulfur.GEOCHEMICAL PERSPECTIVES LETTERS,21(0),37-41. |
| MLA | Ye, L.,et al."Iron(III) reducing bacteria immobilise antimonite by respiring elemental sulfur".GEOCHEMICAL PERSPECTIVES LETTERS 21.0(2022):37-41. |
入库方式： OAI收割
来源：生态环境研究中心
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