| 催化动力学光度法监测试样中痕量钒 |
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| 引用本文： | 章旭坤,刘焕云,韩双录.催化动力学光度法监测试样中痕量钒[J].河北大学学报(自然科学版),1993(1). |
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| 作者姓名： | 章旭坤 刘焕云 韩双录 |
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| 作者单位： | 河北大学化学系
(章旭坤，刘焕云)，河北大学化学系(韩双录) |
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| 摘 要： | 本文详细地研究了钒催化溴酸钾氧化溴代邻苯三酚红的褪色反应,用于监测各种试样中的痕量钒。在最佳测定条件下,方法的表观摩尔吸光系数高达1.51×10~7L·mol~(-1)·cm~(-1),其灵敏度为3.37×10~(-12)gV(v)/ml,线性范围为3.068～76.70ngV(v)/27ml,选用合适掩蔽剂提高了方法的选择性。该法已用于豆类作物、草霉、人发、麦饭石及水中痕量钒的测定,结果令人满意。
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| 关 键 词： | 钒测定 催化氧化 溴代邻苯三酚红 动力学分光光度法 |
Catalytic-Kinetic Spectrophotometric Detection of Trace Vanadium in a Variety of Samples |
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| Zhan-g Xukun Liu Huanyun Han Shuangl u.Catalytic-Kinetic Spectrophotometric Detection of Trace Vanadium in a Variety of Samples[J].Journal of Hebei University (Natural Science Edition),1993(1). |
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| Authors: | Zhan-g Xukun Liu Huanyun Han Shuangl u |
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| Institution: | Department of Chemistry |
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| Abstract: | The decolouration reaction based on vanadium-catalysed oxidation of bromo- pyrogallol red by potassium bromate has been developed for detection of trace vanadium in a variety of sames, under optimum conditions the apparent molar absorption coefficient is 1.51 × 107 L· mol-1· cm-1, the sensitivity is 3.37 ×10-12 gV(v) / ml and the linear range is 3.068 ~ 76.70 ngV(v) / 27ml for this method. The selectivity may be enhanced to make use of certain masking-agents. It has been applied to the determination of trace vanadium in legume crops, strawberry, human hair, maifanite and drinking water with excellent results. |
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| Keywords: | Vanadium determination Catalytic oxidation Bromo- pyrogallol red Kinetic-spectrophotometry |
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