| 引用本文： |
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唐宁莉,杨长发.锇(Ⅷ)-高碘酸钾-5-Br-PADAP体系催化光度法测定痕量锇[J].广西科学,2002,9(4):268-269. [点击复制]
- Tang Ningli,Yang Changfa.Determination of Trace Osmium by Catalytic Spectrophotometry in the System of Osmium(Ⅷ)-Potassium Periodate-5-Br-PADAP[J].Guangxi Sciences,2002,9(4):268-269. [点击复制]
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| 摘要: |
| 研究在氢氧化钠介质中,痕量锇(Ⅷ)催化高碘酸钾氧化5-Br-PADAP的褪色反应及其动力学条件,建立了测定痕量锇的新方法。在选定的最佳条件下,方法的灵敏度为2.18×10-10g/ml,测定范围为10~60mg/L,表观活化能为45.4KJ/mol。本法用于合成矿样中锇的测定,结果满意。 |
| 关键词: 锇 5-Br-PADAP 催化光度法 |
| DOI： |
| 投稿时间：2002-04-27 |
| 基金项目: |
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| Determination of Trace Osmium by Catalytic Spectrophotometry in the System of Osmium(Ⅷ)-Potassium Periodate-5-Br-PADAP |
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Tang Ningli, Yang Changfa
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| (Dept. of Materials and Chemical Engi., Guilin Institute of Tech., 12 Jianganlu, Guilin, Guangxi, 541004, China) |
| Abstract: |
| A new catalytic spectrophotometric method is represented for the determination of trace osmium(Ⅷ) based on the catalytic effect of osmium(Ⅷ) on the oxidation of 5-Br-PADAP by potassium periodate in sodium hydroxide.In the selected conditions,Beer's law is obeyed for osmium(Ⅷ) in the range of 10~60 mg/L and the sensitivity is 2.18×10-10 g/ml.According to the equation of Arrhenius the apparent energy of activation is calculated to be 45.4 KJ/mol.The method is applied to the determination of trace osmium(Ⅷ) in synthetic ore samples with sactisfactory results. |
| Key words: osmium 5-Br-PADAP catalytic spectrophotometry |
