H_2O_2的KMnO_4-Luminol化学发光体系测定

Determination of H_2O_2 by KMnO_4 -Luminol System

在碱性介质中 ,H2O2 能极大地增强KMnO4-Luminol的化学发光强度 ,据此建立一种测定H2O2 的方法 ;该法的线性范围为5.0×10-8 ～5.0×10-5 mol/L,检出限为1.4×10-8 mol/L;利用该法测定了雨水中H2O2 的含量 ,并进行了回收率测定 ,回收率在95%～103% 。

It is found that H 2 O 2 can intensely enhance the chemiluminescence intensity of KMnO 4 -luminol system in basic condition.Based on it,a method of determining H 2 O 2 was proposed.The linear range of the method is5.0×10 -8 ～5.0×10 -5 mol/L for H 2 O 2 ,and the detection limit is1.4×10 -8 mol/L.The method has been satisfactorily applied to the analysis of H 2 O 2 in rain water and the recovery is between95%～103%.