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| 锇(Ⅳ)-高碘酸钾-偶氮氯膦-pC催化分光光度法测定痕量锇的研究 |
| Catalytic Spectrophotometric Determination of Trace Osmium Based on the Catalytic Reaction of Chlorophosphonazo-pC and KIO4 |
| 投稿时间：2003-05-12 修订日期：2003-06-23 |
| DOI： |
| 中文关键词: 锇 偶氮氯膦-pC 催化光度法 |
| 英文关键词:Osmium chlorophosnazo-pC spectrophotometry |
| 基金项目: |
| 作者 | 单位 | | 李欣 | 中国科学院兰州化学物理研究所, 甘肃, 兰州, 730000
甘肃联合大学化学系, 甘肃, 兰州, 730000 | | 陈立仁 | 中国科学院兰州化学物理研究所, 甘肃, 兰州, 730000 | | 魏立山 | 甘肃联合大学化学系, 甘肃, 兰州, 730000 |
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| 中文摘要: |
| 在1.0mol/L硫酸介质中,微量锇(Ⅳ)的存在对KIO4氧化偶氮氯膦-pC的褪色反应有明显的催化作用,据此建立微量锇的催化光度分析法.方法的检出限为0.0002μg/mL,锇(Ⅳ)的含量在0.0006～0.003μg/mL之间有良好的线性关系,反应在水相中进行,应用于贵金属精矿中锇的测定,结果满意. |
| 英文摘要: |
| A catalytic spectrophotometric method based on the catalytic effect of Os(Ⅳ)on the oxidation of chlorophosphonazo-pC with KIO4 in acidic medium has been proposed for the determination of trace osmium. The reaction was carried out directly in aqueous solution. The detection limit is 0.000 2 μg/mL and the Beer's law is obeyed in the range of 0.000 6～0.003 μg/mL. The method proposed has been applied to the determination of Osmium in noble metals ores with satisfactory results. |
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