Abstract
Abstract The effect of gamma rays on aqueous solutions of orthochlorobenzoic acid (OCBA), metachlorobenzoic acid (MCBA) and parachlorobenzoic acid (PCBA) have been studied. The H atom rate constants for OCBA and MCBA have been determined in a degassed solution of 0.8 N H2 SO4 using isopropanol as the competitor and determining G(H2) at different concentration ratios of the competitors. Similarly, the OH radical rate constants have been determined for all three chlorobenzoic acids at pH 7.0 in oxygenated solution using isopropanol as the competitor and measuring acetone yields at different concentration ratios of the chlorobenzoic acids and isopropanol. The hydrated electron rate constants were measured at pH 11 by measuring the decay of the e − aq in presence of the chlorobenzoic acids. G(CO2), G(H2O2) and G(Cl−) have also been measured and their yields have been discussed. Paper chromatography of the products revealed 4–6 components in each case.
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