摘要
基于在丙三醇存在下，以邻菲罗啉作活化剂，铁（Ⅲ）对溴酸钾氧化维多利亚天蓝Ｂ褪色的催化作用，建立了痕量铁的反相流动注射分析（ｒＦＩＡ）新方法．方法的线性范围为０．０３～１．８０μｇ／ｍＬ铁（Ⅲ），对０．０５μｇ／ｍＬ铁（Ⅲ）平行测定１１次的相对标准偏差为１．５％，进样频率为１６ｓ／ｈ．方法可直接用于水样、工业盐酸等样品中痕量铁的测定，回收试验的回收率为９１％～１０５％．
A rapid catalytic spectrophotometric method for the determination of trace iron has been established by reverse flow injection technique based on iron catalyzing decoloration reaction of Victoria blue B with potassium bromate in the presence of 1,10 phenathroline. The linear range is 0.03～1.80 μg/mL. The relative standard deviation is 1.5% obtained from 11 standard solutions each containing 0.05 μg/mL of iron. 16 samples can be analysed per hour. The method has been applied to the determination of natural water, chemical pure reagent hydrochloric acid and industrial hydrochloric acid with satisfactory results.
出处
《陕西师大学报（自然科学版）》
CSCD
北大核心
1997年第4期58-61,共4页
Journal of Shaanxi Normal University(Natural Science Edition)
关键词
流动注射分析
催化光度法
铁
测定
flow injection analysis
catalytic spectrophotometric method
Victoria blue B
iron
