| 靛蓝胭脂红-溴酸钾体系催化光度法测定微量碘 |
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| 引用本文： | 白林山,黎伟利.靛蓝胭脂红-溴酸钾体系催化光度法测定微量碘[J].分析试验室,2001,20(3):46-47. |
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| 作者姓名： | 白林山 黎伟利 |
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| 作者单位： | 安徽工业大学化工系, |
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| 摘 要： | 研究了在室温及0．4mol/L H2SO4介质中碘离子对KBrO3氧化靛蓝胭脂红褪色反应的催化作用，建立了一种测定微量碘的新方法。碘离子浓度在0．20－2．0μg/mL范围内与△A呈线性关系，检测限为0．14μg/mL。多数常见离子无干扰。可用于海带中微量碘的测定。
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| 关 键 词： | 碘 靛蓝胭脂红 催化光度法 海带 溴酸钾 微量分析 |
| 文章编号： | 1000-0720(2001)03-0046-02 |
Kinetic spectrophotometric determination of trace amounts of iodide |
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| Bai Lin-shan,LI Wei-li.Kinetic spectrophotometric determination of trace amounts of iodide[J].Chinese Journal of Analysis Laboratory,2001,20(3):46-47. |
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| Authors: | Bai Lin-shan LI Wei-li |
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| Abstract: | A catalytic spectrophotometric method for determination of trace amounts of iodide at 20℃ was developed, based on the catalytic effect of I- on the oxidation of indigo carmine by KBrO3 in 0.4 mol/L H2SO4 medium. The linear calibration range and the detection limit are 0.20～2.0 μg/mL and 0.14 μg/mL for iodide, respectively. Most of the common ions did not interfere the determination of iodide. The method was applied to the determination of trace amounts of iodide in kelp with satisfactory results. |
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| Keywords: | Iodide Indigo carmine Kinetic spectrophotometry Kelp |
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