摘要
在HCI介质中,Fe(Ⅲ)强烈地催化过氧化氢氧化次甲基绿的反应,据此建立了催化分光光度法测定痕量Fe(Ⅲ)的新方法。本方法的检出限为0.005ug/25mL,测定范围为0～0.25μg/mL,并用本法对人发、饮用水、环境标准样品进行了分析。
A catalytic spectrophotometric method for the determination of trace Fe(Ⅲ) based on the oxidzation of methylene green with H_2O_2 by means of Fe(Ⅲ) as catalyst has been investigated. The detection limit is 0.005μg/25mL and the linear response is in the range of 0 to 0.25μg/25mL. The effect of foreign ions has been studied and the method shows good selectivity. The proposed method has been applied to analyse biological and water samples with satisfactory results.
出处
《分析试验室》
CAS
CSCD
北大核心
1992年第5期13-15,共3页
Chinese Journal of Analysis Laboratory
关键词
次甲基绿
过氧化氢
铁
分光光度法
Hydrogen peroxide
methylene green
catalytic spectrophotometric method
iron (Ⅲ) determination.
