KINETICS OF INDIUM ATOMIZATION FROM DIFFERENT ATOMIZER SURFACES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY (ETAAS)
文献类型：期刊论文
| 作者 | YAN, XP; NI, ZM; YANG, XT; HONG, GQ |
| 刊名 | TALANTA
 |
| 出版日期 | 1993 |
| 卷号 | 40期号:12页码:1839-1846 |
| 英文摘要 | The kinetic parameters of indium atomization in electrothermal atomic absorption spectrometry (ETAAS) have been determined by a newly proposed method. Effect of the atomizer surface and the palladium modifier on the kinetics of indium atomization has been investigated. The mechanisms of indium atomization seem to bc identical for the pyrolytically coated graphite and the uncoated graphite tubes, i.e. the rate-limiting step for the atomization changes from a first order kinetics at lower temperatures into a nearly 1/3 order kinetics at higher temperatures, which may suggest that the analyte moves from a dispersed state to agglomates with increasing temperature. However, for the zirconium coated graphite tube, the atomization of indium is controlled by a single mechanism with the kinetic order of near 2/3 and the activation energy of 186 +/- 13 kJ/mol. Relatively weak indium-zirconium carbide interactions and the release of indium from the sphere of molten indium metal on the zirconium coated surface are suggested. In the presence of palladium, a simple mechanism, i.e. the release of indium from the solid solution of the In and the Pd on the pyrolytically coated graphite surface, is proposed to account for the observed first order kinetics and the activation energy of 421 +/- 27 kJ/mol. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:A1993ML10900010 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24474]  |
| 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 | YAN, XP,NI, ZM,YANG, XT,et al. KINETICS OF INDIUM ATOMIZATION FROM DIFFERENT ATOMIZER SURFACES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY (ETAAS)[J]. TALANTA,1993,40(12):1839-1846. |
| APA | YAN, XP,NI, ZM,YANG, XT,&HONG, GQ.(1993).KINETICS OF INDIUM ATOMIZATION FROM DIFFERENT ATOMIZER SURFACES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY (ETAAS).TALANTA,40(12),1839-1846. |
| MLA | YAN, XP,et al."KINETICS OF INDIUM ATOMIZATION FROM DIFFERENT ATOMIZER SURFACES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY (ETAAS)".TALANTA 40.12(1993):1839-1846. |
入库方式： OAI收割
来源：生态环境研究中心
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