摘要
在HAc-NaAc介质中,铬(Ⅵ)强烈地催化过氧化氢氧化酚藏花红的反应,据此建立了催化分光光度法测定痕量铬(Ⅵ)的新方法。本法的检出限为2.9×10^(-8)g/mL,测定范围为0～5μg/25mL。用本法测定环境水样中的铬(Ⅵ),结果令人满意。
This paper studied the catalytic effect of trace chromium (Ⅵ) on the decolorization of phenosafranine by H_2O_2 in HAc-NaAc solution. Hence a new method for the determination of trace chromium (Ⅵ) was developed. The detection limit of Cr in this method was 2.9×10^(-8)g/mL, the linear response was in the range of 0 to 5μg/25mL. The effect of foreign ions on the determination was studied and the method showed fairly good selectivity. Satisfactory results were obtained for the determination of trace chromium in water samples.
出处
《分析试验室》
CAS
CSCD
北大核心
1991年第1期22-23,共2页
Chinese Journal of Analysis Laboratory
关键词
铬
催化
分光光度法
测定
Hydrogen peroxide, Phenosafranine, Catalytic Spectrophotometric mtthod, chromium
