| 溴酸钾氧化吡口罗红G催化动力学光度法测定痕量NO-2 |
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| 引用本文： | 李慧芝,孔伟,崔丽君,杨春霞,张巍. 溴酸钾氧化吡口罗红G催化动力学光度法测定痕量NO-2[J]. 分析科学学报, 1997, 0(1) |
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| 作者姓名： | 李慧芝 孔伟 崔丽君 杨春霞 张巍 |
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| 作者单位： | 山东建材学院应化系，山东化工研究院 |
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| 摘 要： | 研究了在磷酸介质中亚硝酸根催化溴酸钾氧化吡口罗红Ｇ而使其褪色，建立了催化动力学光度法测定痕量亚硝酸根的新方法，测定范围为０．２～２０μｇ／ｍＬ，检出限为０．２ｎｇ／ｍＬ，用于食品和水样中的亚硝酸根测定获得满意结果
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| 关 键 词： | 亚硝酸根 催化动力学光度法 吡口罗红G |
Catalytic Kinetic Spectrophotometric Determination of Trace Nitrite Based on the Oxidization of Pyronine G by Potassium Bromate |
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| Li Huizhi,Kong Wei,Cui Lijun,Yang Chunxia,Zhang Wei. Catalytic Kinetic Spectrophotometric Determination of Trace Nitrite Based on the Oxidization of Pyronine G by Potassium Bromate[J]. Journal of Analytical Science, 1997, 0(1) |
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| Authors: | Li Huizhi Kong Wei Cui Lijun Yang Chunxia Zhang Wei |
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| Abstract: | In this paper, a catalytic kinetic spectrophotometric method is proposed for determining trace amounts of nitrite. The method is based on oxidization decoloration of pyronine G by potassium bromate in phosphoric acid medium catalysed by nitrite. The range of determination is 0.2-20ng/mL for nitrite with the detection limit of 0.2ng/mL. The method has been used to determine trace nitrite in water and food samples with satisfactory results. |
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| Keywords: | Nitrite Catalytic kinetic spectrophotometry Pyronine G |
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