| 间接分光光度法测定药品中VC含量 |
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| 引用本文： | 潘乐,孙瑞敏.间接分光光度法测定药品中VC含量[J].黄山学院学报,2011,13(3):47-49. |
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| 作者姓名： | 潘乐 孙瑞敏 |
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| 作者单位： | 黄山学院化学系,安徽黄山,245041 |
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| 摘 要： | 利用VC的还原性，将Fe3+定量转化为Fe2+离子，产生的Fe2+与邻菲哆啉形成橘红色络合物，从而间接测定VC的含量。结果表明，络合物在510nm处有最大吸收峰，且显色物的浓度在2.0×10-6-5.0×10-5mol/L范围内与吸光度成正比,其相关系数R为0.9936，检出限为2.0×10-6mol/L，被测定样品的...
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| 关 键 词： | VC：邻菲哆啉 分光光度法 间接 铁 |
The Determination of the Content of Vitamin C in Medicine by Indirect Spectrophotometry |
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| Pan Le,Sun Ruimin.The Determination of the Content of Vitamin C in Medicine by Indirect Spectrophotometry[J].Journal of Huangshan University,2011,13(3):47-49. |
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| Authors: | Pan Le Sun Ruimin |
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| Institution: | Pan Le,Sun Ruimin(Chemistry Department,Huangshan University,Huangshan 245041,China) |
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| Abstract: | VC reduces Fe(III) to Fe(II) quickly and the latter reacts with 1,10-pHenanthroline monohydrate to form a reddish colored complex with its absorption maximum at the wavelength of 510 nm.Under the optimal determination condition,a good linear of this method is observed in the range of 2.0×10-6-5.0×10-5mol/L.The correlation coefficient(r) is 0.9936,the detection limit is 2.0×10-6mol/L,the RSD of the determined samples is less than 5.0%,and the recovery is 99.0℅-104.0℅.This method is simple,rapid,and accurate and has good reproducibility,which can be used widely to determine the content of VC in samples. |
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| Keywords: | Vitamin C 1 10-pHenanthroline monohydrate spectrophotometry indirect oxide |
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