【摘要】 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（西北大学电分析化学研究所，西安，７１００６９）关键词甘草酸，有机去极剂，极谱催化波，药物分析有机化合物尤其是生物活性物质作为有机去极剂在氧化剂存在时有无它们自身的极谱催化波，对电分析化学和...更多还原

【Abstract】 A polarographic catalytic wave of glycyrrhizic acid(GA) in the presence of KIP3 was observed.Based on the catalytic wave,a new method for the determination of GA was developed.In 0.1 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 GA is 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 GA in pharmaceutical Potenlin injection.更多还原