Stabilization of Cd2+/Cr3+ During Aqueous Fe(II)-Induced Recrystallization of Al-Substituted Goethite
文献类型：期刊论文
| 作者 | Liu, CS; Chen, MJ; Li, FB; Tao, L; Lin, J; Gao, T; Tong, H; Liu, YH; Long, SQ; Wu, F |
| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 出版日期 | 2019 |
| 卷号 | 83期号:2页码:483—491 |
| 关键词 | IRON ATOM EXCHANGE MINERALIZATION PATHWAYS REDUCTIVE DISSOLUTION ELECTRON-TRANSFER TRANSFORMATION FERRIHYDRITE ALUMINUM HEMATITE OXIDES INHIBITION |
| ISSN号 | 0361-5995 |
| DOI | 10.2136/sssaj2018.05.0169 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The aqueous Fe2+ (Fe-aq(2+))-induced recrystallization of iron minerals is an important geochemical process with critical effects on the environmental behavior of metal pollutants in soils. However, the effects of different heavy metals with distinctive physicochemical properties on the Fe-aq(2+)-induced recrystallization of iron minerals and the different stabilization behaviors of these heavy metals remain unclear. This study examined the effects of Cd2+ and Cr3+ on the Fe-aq(2+)-induced recrystallization of Al-substituted goethites and the simultaneous stabilization of Cd2+/Cr3+ ions by the recrystallized Al-substituted goethites. Results from stable Fe isotopic tracer experiments and Mossbauer characterization show that Fe atoms were exchanged between Fe-aq(2+) and structural Fe(III) in Al-substituted goethites with coexisting Cd2+/Cr3+, although both Cd2+ and Cr3+ decreased the exchange rates. During the Fe atom exchange, Al-substituted goethites were recrystallized and a portion of Cd2+/Cr3+ ions were stabilized by the resulting goethite products. Compared with Cd2+, more Cr3+ ions were immobilized by the recrystallized Al-substituted goethites due to the lower hydrolysis constant of Cr3+ than Cd2+, as well as the closer ionic radius of Cr3+ with Fe3+ and Al3+. Al-goethites with higher Al contents further decreased the Fe atom exchange rates while increasing the amounts of immobilized metal ions when in the presence of Cd2+ or Cr3+. The findings of the present study suggest that the physicochemical properties of metal ions play critical roles in affecting their environmental behavior and fates during Fe-aq(2+)-induced recrystallization of iron minerals in soils. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31824]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Environ Geochem, Guiyang 550081, Guizhou, Peoples R China; 2.Inst Ecoenviron Sci & Tech, Guangdong Key Lab Integrated Agroenviron Pollut C, Guangzhou 510650, Guangdong, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Nucl Anal Tech, Shanghai 201800, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, CS,Chen, MJ,Li, FB,et al. Stabilization of Cd2+/Cr3+ During Aqueous Fe(II)-Induced Recrystallization of Al-Substituted Goethite[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2019,83(2):483—491. |
| APA | Liu, CS.,Chen, MJ.,Li, FB.,Tao, L.,Lin, J.,...&Xia, YF.(2019).Stabilization of Cd2+/Cr3+ During Aqueous Fe(II)-Induced Recrystallization of Al-Substituted Goethite.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,83(2),483—491. |
| MLA | Liu, CS,et al."Stabilization of Cd2+/Cr3+ During Aqueous Fe(II)-Induced Recrystallization of Al-Substituted Goethite".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 83.2(2019):483—491. |
入库方式： OAI收割
来源：上海应用物理研究所
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