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刊物信息
期刊名称:药物分析杂志
主管单位:中国科学技术协会
主办单位:中国药学会
承办:中国食品药品检定研究院
主编:金少鸿
编辑部主任:粟晓黎
地址:北京天坛西里2号
邮政编码:100050
电话:010-67012819,67058427
电子邮箱:ywfx@nicpbp.org.cn
国际标准刊号:ISSN 0254-1793
国内统一刊号:CN 11-2224/R
邮发代号:2-237

 

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催化荧光法测定富硒中药中的硒(Ⅳ)含量

Determination of selenium content in abundant selenium herbal drugs by catalytic fluorescence analysis method

分类号:
出版年·卷·期(页码):2012,32 (7):0-0
DOI: 10.16155/j.0254-1793.2017.01.01
-----摘要:-------------------------------------------------------------------------------------------

目的: 建立富硒中药材中硒的测定方法。 方法: 在稀硫酸介质中,痕量硒(Ⅳ)能够催化溴酸钾氧化中性红使其发生荧光猝灭,且催化前后中性红荧光强度的变化(ΔF)与硒的含量在一定范围内呈良好的线性关系,摸索了实验条件对催化体系的影响。 结果: 方法的线性范围为12~60 μg·L-1,检出限为5.2 μg·L-1,回收率为95%~105%。 结论: 该方法简便、快速、准确,可作为中草药中痕量硒的一种快速分析方法。

-----英文摘要:---------------------------------------------------------------------------------------

Objective: To establish a new method based on fluorescence quenching for the determination of trace selenium (Se) in abundant selenium herbal drugs. Method: Trace Se (Ⅳ) could catalyze the oxidation of neutral red by potassium bromate under the condition of fluorescence quenching in the medium of dilute sulfuric acid. The values(ΔF)of fluorescence intensity before and after the catalyzation kept a good liner relationship with the concentration of Se (Ⅳ) within a certain range. The effect of the experimental conditions on catalyzation system was also studied. Result: The linear range of the method was 12-60 μg·L-1, and the detection limit was 5.2 μg·L-1. The range of recovery rate was 95%-105%. Conclusion: The method is simple, fast and accurate. As a new analytical method, it can be used to determinate trace selenium in herbal drugs rapidly.

-----参考文献:---------------------------------------------------------------------------------------
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10 GAO Jia-you(高甲友). Florimetric determination of selenium(Ⅳ) with acridine red by the fluorescence quenching effect(吖啶红荧光猝灭法测定痕量硒). Physic Test Cheml Anal Part B(Chem Anal) (理化检验-化学分册), 2003,39(8):443
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