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投稿时间:2015-01-30
投稿时间:2015-01-30
中文摘要: 建立电位滴定法测定马蹄中多酚类化合物含量的定量分析方法。以高锰酸钾为氧化剂,在强酸性介质中,以没 食子酸为参照,用二阶微分法确定待测样品试液的滴定终点电位,对马蹄提取物中的多酚类化合物进行自动滴定,并与 可见分光光度法进行对比。方法的 RSD 为 1.29 %(n=5),平均回收率为 99.34 %。结果表明,本方法体系可以完成对多酚 类物质的快速测定。
Abstract:The automatically potentiometric titration was used to determine polyphenols in Chinese Water chestnut. The sample was tested used potassium permanganate as an oxidant in strong acid medium, gallic acid as reference, and the result was compared with the visible spectrophotometry. The RSD of method was 1.29 % (n=5), and the average recovery was 99.34 %. The results showed that the methodology can be completed on the rapid determination of polyphenols.
文章编号:201609039 中图分类号: 文献标志码:A
基金项目:
Author Name | Affiliation |
TANG Ya-fang, HUANG Guang-feng | Zhenjiang Vocational Technical College, Zhenjiang 212003, Jiangsu, China |
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