| KBrO_3氧化苋菜红催化动力学光度法测定痕量钒 |
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| 引用本文： | 段沅杏,李干鹏,张承明.KBrO_3氧化苋菜红催化动力学光度法测定痕量钒[J].云南化工,2010,37(5):44-46. |
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| 作者姓名： | 段沅杏 李干鹏 张承明 |
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| 作者单位： | [1]云南省烟草化学重点实验室,云南烟草科学研究院,云南昆明650106 [2]云南民族大学化学与生物技术学院,云南昆明650031 |
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| 摘 要： | 在H2SO4介质中,痕量的钒能灵敏地催化KBrO3氧化苋菜红褪色的反应。研究了该催化褪色反应的最佳条件,建立了一种测定痕量钒的新方法。在最大吸收波长520nm及最佳测定条件下,该方法的线性范围为0.008～3.6μg/mL,检出限为4.02ng/mL。
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| 关 键 词： | 钒 催化动力学光度法 苋菜红 溴酸钾 |
The Determination of Trace Vanadium (V) through Kinetic Spectrophotometry Based on The Amaranth Oxidized by Potassium Bromate |
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| DUAN Yuan-xing,LI Gan-peng,ZHANG Cheng-ming.The Determination of Trace Vanadium (V) through Kinetic Spectrophotometry Based on The Amaranth Oxidized by Potassium Bromate[J].Yunnan Chemical Technology,2010,37(5):44-46. |
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| Authors: | DUAN Yuan-xing LI Gan-peng ZHANG Cheng-ming |
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| Affiliation: | 1. Key Lab of Tobacco Chemistry of Yunnan, Yunnan Academy of Tobacco Science, Kunming 650106, China; 2. Department of Chemistry and Biotechnology, Yunnan Nationalities University, Kunming 650031, China) |
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| Abstract: | A new spectrophotometric method of determination of trace amount vanadium（v） was developed.It is based on the fact that vanadium（v） can catalyze the decolorizing of amaranth with potassium bromate in the medium of sulphuric acid.The optium conditions have been studied.The linear range of vanadium（v） is 0.008～3.6μg/mL,and the determination limit is 4.02ng/mL. |
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| Keywords: | vanadium （v） catalytic spectrophotometry amaranth potassium bromate |
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