Effect of temperature on Hg-cysteine complexes in vermiculite and montmorillonite
文献类型：期刊论文
| 作者 | Malferrari, D; Brigatti, MF; Marcelli, A; Chu, WS; Wu, ZY; Chu WS(储旺盛) ; Wu ZY(吴自玉)
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| 刊名 | APPLIED CLAY SCIENCE
 |
| 出版日期 | 2010 |
| 卷号 | 50期号:1页码:12-18 |
| 关键词 | Cysteine Hg Montmorillonite Thermal behaviour Thermal analyses Vermiculite X-ray absorption spectroscopy |
| 通讯作者 | Brigatti, MF (reprint author), Univ Modena & Reggio Emilia, Dipartimento Sci Terra, Lgo S Eufemia 19, I-41121 Modena, Italy. |
| 英文摘要 | This study describes the influence of temperature on two Hg(II)-cysteine modified clay minerals with different layer charges (i.e., montmorillonite and vermiculite) by using chemical and thermal analyses coupled with evolved gas mass spectrometry (TGA-MSEGA), synchrotron-based X-ray absorption spectroscopy (XAS), and X-ray powder diffraction (XRPD) techniques; these two latter techniques were applied on samples heated "in situ" up to 900 degrees C. Hg bonds cysteine by the thiol group with Hg-SH bond lengths similar in both clay minerals, thus suggesting their independence from layer charge. On the contrary, the thermal behaviour of the adsorbed organometallic complexes was strictly layer charge dependent, as evidenced by decomposition temperatures, which were lower in montmorillonite than in vermiculite. Results from X-ray absorption near edge structure (XANES) spectroscopy evidenced nearly complete Hg desorption in montmorillonite between 600 and 700 degrees C, unlike in vermiculite where Hg was still present at these values. (C) 2010 Published by Elsevier B.V. |
| 学科主题 | Chemistry; Materials Science; Mineralogy |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Multidisciplinary ; Mineralogy |
| 收录类别 | SCI |
| WOS记录号 | WOS:000283617600002 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225490]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Malferrari, D,Brigatti, MF,Marcelli, A,et al. Effect of temperature on Hg-cysteine complexes in vermiculite and montmorillonite[J]. APPLIED CLAY SCIENCE,2010,50(1):12-18. |
| APA | Malferrari, D.,Brigatti, MF.,Marcelli, A.,Chu, WS.,Wu, ZY.,...&吴自玉.(2010).Effect of temperature on Hg-cysteine complexes in vermiculite and montmorillonite.APPLIED CLAY SCIENCE,50(1),12-18. |
| MLA | Malferrari, D,et al."Effect of temperature on Hg-cysteine complexes in vermiculite and montmorillonite".APPLIED CLAY SCIENCE 50.1(2010):12-18. |
入库方式： OAI收割
来源：高能物理研究所
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