摘要
本文基于抗坏血酸还原铁(Ⅲ)-邻菲啰啉为红色铁(Ⅱ)-邻菲啰啉,建立了流动注射分光光度法测定药品中抗坏血酸的方法。本法体系简单,操作方便、快速,标准加入试验的回收率为92～103％。
A simple and rapid procedure for the flow injection spectrophotometric determination of ascorbic acid is described, it involves formation of ferrous complex when ascorbic acid injected reacts with the carrier stream of a mixture of Fe(Ⅲ) and 1, 10-phenanthroline, measuring the absorbance at 508nm. The optical condition was selected experimentally. The method has been applied to the assay of pharmaceutical preparations of vitamin C with satisfactory results. The recoveries were 92％～103％ and the sampling frequency was 90 samples/h.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第2期193-195,共3页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
关键词
流动注射
分光光度法
维生素C
Flow injection analysis, Spectrophotometry, Ascorbie acid.
