流动注射-化学发光法测定双氧水的分解率

DETERMINATION OF HYDROGEN PEROXIDE BY FLOW INJECTION CHEMILUMINESCENCE METHOD

在铁氰化钾-亚铁氰化钾存在的氢氧化钠碱性介质中,双氧水可氧化鲁米诺产生化学发光,结合流动注射技术,建立了一种测定双氧水漂白过程中双氧水分解率的新方法.该方法测定双氧水的检出限为1.75×10^(-5)mol/L,线性范围为2.1×10^(-5)～1.7×10^(-2)mol/L.相对标准偏差为2.9％(5.8×10^(-3)mol/L,n=11).

A new flow injection chemiluminescence method for determination of decomposition ratio of H2O2 in bleaching process was developed. It was based on the chemiluminescence of the K4Fe(CN)6-K3Fe(CN)6-H2O2-luminol system in basic medium.The detection limit for determination of H202 was 1.75×10-5 mol/L and the linear range was 2.1×10-5-1.7×10-2 mol/LThe relative standard deviation was 2.9%(5.8×10-3 mol/L, n=11).