高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (10): 1541.

• 研究简报 • 上一篇    下一篇

碘酸钾存在时极谱催化波法测定甘草酸

过玮, 赵明仁, 宋俊峰, 柳芸   

  1. 西北大学电分析化学研究所, 西安, 710069
  • 收稿日期:1995-10-05 出版日期:1996-10-24 发布日期:1996-10-24
  • 通讯作者: 宋俊峰
  • 作者简介:过玮,女,50岁,副教授.
  • 基金资助:

    国家自然科学基金;陕西省自然科学基金

Polarographic Catalytic Determination of Glycyrrhizic Acid in the Presence of KIO3

GUO Wei, ZHAO Min-Ren, SONG Jun-Feng, LIU Yun   

  1. Institute of Electroanalytical Chemistry, Northwest University, Xi'an, 710069
  • Received:1995-10-05 Online:1996-10-24 Published:1996-10-24

PDF (PC)

被引次数

21

关键词: 甘草酸, 有机去极剂, 极谱催化波, 药物分析

Abstract: A polarographic catalytic wave of glycyrrhizic acid(GA) in the presence of KIO3 was observed.Based on the catalytic wave,a new method for the determination of GAwas developed.In0.1 mol/L NaAc-HAc-2×10-3 mol/L KIO3 buffer solution(pH=4.60±0.05),the first derivative peak height of the catalytic wave of GAis proportional to its concentration in the range from 2.0×10-7 to 2.4×10-5 mol/L,The sensitivity of the proposed method is about 20 times higher than that without KIO3.100-fold glucose,200-fold glycine,20-fold cysteine do not interfere in the determination of 4×10-6 mol/L GA,The proposed method was applied to the determination of GAin pharmaceutical Potenlin injection.

Key words: Glycyrrhizic acid, Organic depolarizer, Polarographic catalytic wave, Pharmaceutical analysis

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