荧光法测定当归中阿魏酸的含量
Determination of Ferulic Acid in Chinese Danggui with Fluorescence Spectrometry
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摘要: 根据在一定条件下阿魏酸的相对荧光强度与其浓度在3.0×10-7 到 5.0×10-6 mol/L浓度范围内呈线性关系,建立起一种荧光法测定阿魏酸含量的新方法,方法的检测限为9×10-9 mol/L,同时测定1.0×10-6 mol/L阿魏酸10次,相对标准偏差为2.1，.该法操作简便,灵敏,迅速,用于当归中阿魏酸含量的测定,得到了比较满意的结果.
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关键词:
- 阿魏酸,荧光光谱,当归
Abstract: A new method for the determination of ferulic acid in Chinese Danggui has been developed based on the fluorescence intensity of ferulic acid changing with its concentration.The present method allowed the determination of ferulic acid in the concentration range of 3.0×10-7 to 5.0×10-6 mol/L.The relative standard deviation was 2.1% for 10 replicate analyses of 1.0×10-6 mol/L ferulic acid and the detection limit for ferulic acid was 9×10-9 mol/L.The proposed method was applied to the determination of ferulic acid in Chinese Danggui with satisfactory results. -
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