Simulate methylation reaction of arsenic(III) with methyl iodide in an aquatic system
文献类型：期刊论文
| 作者 | Chen, Baowei; Wang, Thanh; He, Bin; Yuan, Chungang; Gao, Erle; Jiang, Guibin |
| 刊名 | APPLIED ORGANOMETALLIC CHEMISTRY
 |
| 出版日期 | 2006 |
| 卷号 | 20期号:11页码:747-753 |
| 关键词 | methylation methyl iodide inorganic arsenic reaction kinetics methylarsenic aquatic environment |
| 英文摘要 | The methylation reaction of inorganic arsenic occurring in aquatic systems was studied by HPLC-HGAFS as a method to separate and detect soluble methylarsenic species. Transformation from inorganic arsenic to methylarsenic was essential for major changes in toxicity to organisms. Monomethylarsenic [AsOCH(3)(OH)(2)] was the only product in the methylation reaction of inorganic arsenic(III) with methyl iodide (MeI). This process can be described as an oxidative carbonium-ion transfer, with MeI acting as a methyl donor. From a thermodynamic point of view, the activity of the carbonium ion and pH were the two major influencing factors. The pH dependence of redox potential of As(III) was the reason for the effect of pH on methylation of arsenic. The influences of salinity and concentration of the methyl donor may be explained by their effects on the activity of carbonium. Moreover, kinetics experiments demonstrated that the methylation reaction was first-order for both As(III) and methyl iodide. First-order reaction rates were also calculated at different pH, salinity and MeI, and were found to be in the range 0.0026-0.0123 h(-1). The methylation rate varied largely under different reaction conditions. Copyright (c) 2006 John Wiley & Sons, Ltd. |
| WOS记录号 | WOS:000241999700004 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22927]  |
| 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,Wang, Thanh,He, Bin,et al. Simulate methylation reaction of arsenic(III) with methyl iodide in an aquatic system[J]. APPLIED ORGANOMETALLIC CHEMISTRY,2006,20(11):747-753. |
| APA | Chen, Baowei,Wang, Thanh,He, Bin,Yuan, Chungang,Gao, Erle,&Jiang, Guibin.(2006).Simulate methylation reaction of arsenic(III) with methyl iodide in an aquatic system.APPLIED ORGANOMETALLIC CHEMISTRY,20(11),747-753. |
| MLA | Chen, Baowei,et al."Simulate methylation reaction of arsenic(III) with methyl iodide in an aquatic system".APPLIED ORGANOMETALLIC CHEMISTRY 20.11(2006):747-753. |
入库方式： OAI收割
来源：生态环境研究中心
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