Methylation mechanism of tin(II) by methylcobalamin in aquatic systems
文献类型：期刊论文
| 作者 | Chen, Baowei ; Zhou, Qunfang ; Liu, Jiyan ; Cao, Dandan ; Wang, Thanh ; Jiang, Guibin |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2007-06 |
| 卷号 | 68期号:3页码:414-419 |
| 关键词 | methylation tin(II) monomethyltin dimethyltin methylcobalamin reaction kinetics |
| 英文摘要 | The methylation reaction of tin(II) with methylcobalamin (CH3B12) in aquatic systems was modeled in the laboratory. The products were detected by a sensitive gas chromatography-flame photometric detector (GC-FPD), and further identified by gas chromatography-mass spectrometry (GC-MS). Both monomethyltin (MMT) and dimethyltin (DMT) were found as methylation products. Three important effecting factors during the methylation reaction, salinity, pH and aerobic or anaerobic, were studied. The results showed that methyl group can be transferred from CH3B12 to tin in aquatic solutions as a radical or carbonium, as well as a carbanion. Two explanations for the pH-dependency of the methylation reaction between tin(II) and CH3B12 were proposed: pH-dependency of the equilibrium states of CH3B12, and pH-dependency of inorganic tin(II) species whose reactivity vary with the redox potential in the solution. Salinity can influence the activity of the methyl donor, which cause changes in the methylation efficiency. Kinetic experiments showed that the methylation reaction was pseudo-first-order for CH3B12. (c) 2007 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000246836000003 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22478]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Chen, Baowei,Zhou, Qunfang,Liu, Jiyan,et al. Methylation mechanism of tin(II) by methylcobalamin in aquatic systems[J]. CHEMOSPHERE,2007,68(3):414-419. |
| APA | Chen, Baowei,Zhou, Qunfang,Liu, Jiyan,Cao, Dandan,Wang, Thanh,&Jiang, Guibin.(2007).Methylation mechanism of tin(II) by methylcobalamin in aquatic systems.CHEMOSPHERE,68(3),414-419. |
| MLA | Chen, Baowei,et al."Methylation mechanism of tin(II) by methylcobalamin in aquatic systems".CHEMOSPHERE 68.3(2007):414-419. |
入库方式： OAI收割
来源：生态环境研究中心
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