Abstract
The effect of additives on the reduction of potassium permanganate solutions, induced by 60Co γ-rays and highly accelerated electrons, has been investigated in acidic medium. In gamma radiolytic degradation of potassium permanganate in acidic medium in the presence of additives such as manganese dioxide (MnO2), potassium sulphate (K2SO4), sodium persulphate (Na2S2O8), ammonium chloride (NH4Cl) and mixture of potassium sulphate and ammonium chloride (K2SO4+NH4 Cl), the value of G(-MnO4−) is found to be higher at lower dosages and gradually decreases as the dose is increased. G(-MnO42-) is also observed to increase with an increase in the amount of the additives. In pulse radiolysis of acidic potassium permanganate solutions there is formation of MnO42- when K2SO4 and Na2S2O8 are used as additives. MnO43- peak is observed with additive mixture of K2SO4+NH4Cl. The kinetics of the reaction was also studied for various concentrations of potassium permanganate solutions with additives and first order spectra were obtained.
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