| 催化动力学光度法测定植物中的痕量硒(IV) |
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| 引用本文： | 李玉环,王锋. 催化动力学光度法测定植物中的痕量硒(IV)[J]. 微量元素与健康研究, 2002, 0(2) |
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| 作者姓名： | 李玉环 王锋 |
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| 作者单位： | 日照职业技术学院 山东日照276826(李玉环)，日照职业技术学院 山东日照276826(王锋) |
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| 摘 要： | 在酸性介质和三乙醇胺存在下 ,硒 (IV)能催化硫化钠氧化亚甲基兰褪色。研究了这一催化反应的动力学条件 ,建立了利用动力学光度法测定硒 (IV)的新方法。该方法的检测限为3 .74× 1 0 - 7g/ L,硒的含量在 0～ 5 0 μg/ 5 0 ml范围内与褪色反应的 A0 -A呈线性关系。该方法具有良好的选择性和准确度 ,用于植物中痕量硒 (IV)的测定 ,结果满意
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| 关 键 词： | 催化反应 动力学光度法 硒(IV) 植物 |
Determination of Trace Selenium(IV) in the Plants by Catalytic Kinetic Spectrophotometry |
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| LI Yu-Huan,WANG Feng. Determination of Trace Selenium(IV) in the Plants by Catalytic Kinetic Spectrophotometry[J]. Studies of Trace Elements and Health, 2002, 0(2) |
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| Authors: | LI Yu-Huan WANG Feng |
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| Abstract: | Trace selenium(Ⅳ) can catalyze the discolouring oxidization of methylene blue by sodium sulfide in acid medium and thiethanolamine. The conditions of kinetics have been studied in detail and a new method of kinetic Spectrophotometry for the determination of trace selenium(Ⅳ) was established. The limit of detection is 3.74×10 -7 g/L.The detection range is 0～50 μg/50 ml.The method has been used to determine trace selenium in plants with high selectivity? accuracy and satisfactory result. |
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| Keywords: | catalytic reaction kinetic Spectrophotometry selenium(IV) plants |
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