Study of the Effect of Radiation Dose Rate on the Stability of Various Organochlorine Pesticides

Abstract

The radiolysis of organochlorinated pesticides (OCP) is studied in dilute solutions irradiated at dose of 10 kGy with dose rate varied from 8.3 ⋅ 10 −3 up to 2.33 Gy/sec.It is found that the shape of the degradation degree relationship on dose rate is similar for different OCPs in polar and non-polar solvents (hexane, 2-propanol) and does not depend on the concentration of initial substance. The maximum of the OCP degradation degree is registered in the dose rate range of 0.23-0.43 Gy/sec.A lognormal distribution is considered as a function best fitting the experimental data. The OCP degradation mechanism could be explained by the ratio of active and recombined particles along the gradient of ionizing radiation intensity. Keywords