EFFECT OF OXOVANADIUM(IV) ACETYLACETONATE ON THE CHEMILUMINESCENCE REACTION OF LUMINOL IN REVERSE MICELLES

Upon mixing of oxovanadium(IV) acetylacetonate, this complex caused an increase in the chemiluminescence (CL) of luminol in a reverse micell ar medium of cetyltrimethylammonium chloride in chloroform-cyclohexane (6:5 v/v)-water (buffered with NaOH-Na2CO3, pH 12.5) even in the abse nce of an oxidizing reagent such as hydrogen peroxide. In this CL proc ess, the reaction of luminol with the oxovanadium(IV) ion produced fro m the decomposition of the oxovanadium(IV) complex in the reverse mice lles is probably significant. A flow-injection method for the oxovanad ium(IV) determination based on the present reversed micellar mediated CL reaction was examined. All the analytical conditions were optimized using the sample solution of oxovanadium(IV) acetylacetonate in chlor oform. A detection limit (DL) of 0.1 ng cm(-3) and a linear calibratio n graph was obtained with a dynamic range from the DL to 50 ng cm(-3).