| 电位滴定法测定茶叶中茶多酚的含量 |
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| 引用本文： | 袁勇,张素芳,南彩凤,董川.电位滴定法测定茶叶中茶多酚的含量[J].雁北师范学院学报,2007,23(2):29-31. |
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| 作者姓名： | 袁勇 张素芳 南彩凤 董川 |
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| 作者单位： | 1. 山西大学化学化工学院,山西太原,030006
2. 山西大同大学化学化工学院,山西大同,037009 |
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| 摘 要： | 该文建立了电位滴定法测定茶叶中茶多酚含量的定量分析方法.以高锰酸钾为氧化剂,在硫酸强酸性介质中,用待测样品试液进行电位滴定,用一阶微分法确定待测样品试液的滴定终点体积,方法的RSD为4.07%(n=5),平均回收率为99.6%,该法准确、简便,可用于茶叶中茶多酚含量的测定.
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| 关 键 词： | 电位滴定法 高锰酸钾 茶多酚 |
| 文章编号： | 1009-1939（2007）02-00029-03 |
| 修稿时间： | 2006-12-15 |
Determination of Tea Ployphenols in Tea by Electric Potential Titration |
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| YUAN Yong,ZHANG Su-Fang,NAN Cai-Feng,DONG Chuan.Determination of Tea Ployphenols in Tea by Electric Potential Titration[J].Journal of Yanbei Teachers College,2007,23(2):29-31. |
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| Authors: | YUAN Yong ZHANG Su-Fang NAN Cai-Feng DONG Chuan |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Shanxi University,Taiyuan Shanxi, 030006 ;2. School of Chemistry and Chemical Engineering, Shanxi Datong University,Datong Shanxi, 037009 |
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| Abstract: | A new method for the determination of tea polyphenols(TP)by electric potential titration is described in the paper.The titration was accomplished with the sample solution as titrant and Potassium permanganate as the oxidizing agent in strong sulfuric acid medium.The end point of titration was determined with the first order differential method.The relative standard deviation for the measurement was 4.07%(n=5).The average recovery was 99.6%.The proposed method was accurate and simple and has been successfully applied to the determination of tea polyphenols in tea. |
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| Keywords: | electric potential titration potassium permanganate tea polyphenol |
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