Oxidative degradation of acridine orange induced by plasma with contact glow discharge electrolysis

Contact glow discharge electrolysis (CGDE) of acridine orange (AO) was inve stigated under different mediums, pH, and voltages. The results showed that 500 V was the optimum voltage for CGDE of AO under experimental conditions . The concentration and pH had no appreciable effect on the degradation of AO. Fe2+ had a remarkable catalytic effect on if. From the variation of AO concentration with the reaction time, it was demonstrated that the oxidatio n would be a first-order reaction. On the grounds of UV spectra of solution in the degradation process, we speculated the intermediate states. The rat e constants and relevant coefficiencies were displayed under different cond itions. (C) 2001 Elsevier Science B.V. All rights reserved.