Dieldrin transformation to photodieldrin in liver and kidney of broiler

Dieldrin, a potent residual insecticide and common contaminant of the environment, is metabolized in liver and kidney of broiler to photodieldrin, a photoisomer of dieldrin. This metabolite has by gas-liquid chromatography (g.l.c.) analysis a retention time different to the aldrin. The analysis by thin-layer chromatography (t.l.c.) of metabolite shows an Rf of 0.37. The i.r. (infra-red) spectrum shows the band corresponding to the epoxide ring (800-1300 cm-1) and does not show the characteristics bands of C = O (1800 cm-1) and ClC = CCl (1600 cm-1).