A fast and simple KMnO4-OP chemiluminescence system for flow-injection
analysis of hydrogen peroxide is described. When a mixture of sample
and OP is injected into acidic KMnO4, solution in a flow-cell, strong
chemiluminescence occurs. The response is linear to the concentration
of hydrogen peroxide in the range of 1.0 x 10(-8) to 6.0 x 10(-5) mol/
l with 0.1 mol/l permanganate, and the upper limit of linear response
could be extended to 6 x 10(-3) mol/l by increasing the permanganate c
oncentration. The relative standard deviation of the method is between
1.6 and 2.3%. The detection limit is 6.0 x 10(-9) mol/l. This method
is suitable for automatic and continuous analysis and has been success
fully tested for determination of hydrogen peroxide in rain water. The
chemiluminescence intensity was found to be remarkably enhanced in th
e presence of the OP micellar system.