Characterization and acid-mobilization study for typical iron-bearing clay mineral
文献类型：期刊论文
| 作者 | Wang, ZZ; Li, R; Cui, LL; Fu, HB; Lin, J; Chen, JM |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2018 |
| 卷号 | 71期号:-页码:222-232 |
| 关键词 | MOSSBAUER-SPECTROSCOPY ATMOSPHERIC TRANSPORT CHEMICAL-COMPOSITION ELECTRON-MICROSCOPY AEROSOL MODEL DUST SOURCES DESERT DUST OCEAN SOLUBILITY SPECIATION |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2018.04.012 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In this study, iron speciation in five standard clay samples was characterized. Iron mobilization from these clays was then measured in acidic media. For comparison, a commercially available Arizona test dust (ATD) was also observed. The results showed that the free-Fe contents of clays were commonly lower than that of dust aerosols. The components of clays were dominant by the structural Fe held in the aluminosilicate lattice. The iron solubility of the clays were in the order of KGa-2 > SWy-2 > CCa-2 > IMt-2 > NAu-2. Based upon the Mossbauer spectrum and transmission electron microscopy (TEM) analysis, the Fe(II) fraction and the Fe/Si ratio of clay particles changed after dissolution, suggesting the total Fe solubility depended on the Fe atom states existing within the aluminosilicate lattice. The Fe in KGa-2 and SWy-2 was most likely substituted for alkaline elements as the interlayer ions held by ionic bonds in the aluminosilicate, which are more liable to dissolution. However, the Fe in NAu-2 was more likely to be bound by strong covalent bonds in aluminosilicate mineral, which is less soluble. The much highly soluble Fe in ATD was not only linked to the dissolution of an appreciable fraction of Fe(II), but also could be attributed to the fact that the Fe bonds in the clay fraction of ATD were mainly present as ionic bonds. The TEM images showed that reacted clay particles displayed less aggregate particles, with nanoparticle aggregates and the Fe/S-rich tiny particles attached to the remains. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30871]  |
| 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.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China 2.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Jiangsu, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Nucl Anal Tech, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, ZZ,Li, R,Cui, LL,et al. Characterization and acid-mobilization study for typical iron-bearing clay mineral[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2018,71(-):222-232. |
| APA | Wang, ZZ,Li, R,Cui, LL,Fu, HB,Lin, J,&Chen, JM.(2018).Characterization and acid-mobilization study for typical iron-bearing clay mineral.JOURNAL OF ENVIRONMENTAL SCIENCES,71(-),222-232. |
| MLA | Wang, ZZ,et al."Characterization and acid-mobilization study for typical iron-bearing clay mineral".JOURNAL OF ENVIRONMENTAL SCIENCES 71.-(2018):222-232. |
入库方式： OAI收割
来源：上海应用物理研究所
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