Degradation of Insecticides by Cobalt-60 Gamma Radiation2

Effects of ionizing radiation on pesticides in a food irradiation perspective: a bibliographic review

“…Other authors also reported irradiation of DDT in organic solvent. Lippold et al (1969) obtained a 2.1 X 10-7 (mol L_1)/kGy reduction in a 5 ppm solution of DDT in hexane upon irradiation at 50 kGy, and Ceurvels et al (1974), working with a 1 ppm solution of DDT in hexane, obtained a 8.7…”

“…Finally, it is interesting to compare the degradation yields of parathion, malathion, and Tetradifon as obtained by Lippold et al (1969) in a 5 ppm hexane solution and by Cappadona et al in a 10 ppm aqueous solution (Table I). In the former study, the degradation yields were 9.3 X 10~8, 2.1 X 10"7, and 7.9 X 10~8 (mol L-1)/kGy, respectively, at 50 kGy and, for the latter, 8.5 X 10"6, 9.1 X 10"6, and 1.3 X 10"6 (mol L_1)/kGy, respectively, at 3 kGy.…”

Efficacy of Irradiated Glyphosate Against Brachiaria plantaginea L.

“…Perhaps, a dose lower than 250 Gy can also be tested to obtain better used with similar results. This synergistic effect is probably due to the changes in chemical bonds in a variety of pesticides; these changes increase their penetrating power and ionizing properties but may prove either synergistic or antagonistic (Kung et al, 1953;Colby, 1967;Ionesou, 1968;Lippold, 1969;Horowitz & Blumenfeld, 1973;Fish et al, 2015).…”

Effects of60Co Radiation on Herbicides in Aqueous Solution

“…Ultraviolet light, a portion of solar radiation that filters through the earth's atmosphere, is not very effective in dis rupting pesticide chemical bonds due to its limited penetrating power (10). An ionizing radiation with more penetrating power is the gamma ray emmitted by 60 Co. Gamma rays are capable of disrupting chemical bonds of a variety of com pounds (2,3,6,7). The objective of this research was to measure the effects of ionizing radiation on chemical and phytotoxic properties of herbicides.…”