Residues of Organochlorine Pesticides in the Feathers of Oriental White Stork and Siberian White Crane

We collected 51 feather samples from the breasts, tails and wings of Oriental White Storks（Ciconia boyciana）and Siberian White Cranes（Grus leucogeranus）at Hefei Wild Animal Park in May, 2007. Environment-Determination of methylmercury-Gas chromatography was used to determine the residues of op’-DDT，pp’-DDD，pp’-DDE，pp’-DDT，α-BHC，β- BHC，γ- BHC，δ- BHC and Hexachlorobenzene. The results showed that pp’-DDD，pp’-DDE，pp’-DDT，β-BHC， δ-BHC were detected in feathers of both Oriental White Storks and Siberian White Cranes，in which pp’-DDD had the greatest proportion，and reached 0.8936，0.8353 and 0.7516 μg/g (dry weight) respectively in the breast contour feathers，pluma and tail feathers of Oriental White Storks. The residues were 0.5685，0.5077 and 0.4657 μg/g (dry weight) in the feathers of Siberian White Cranes. There was not a significant difference in the residues of pp’-DDD and pp’-DDT in the breast contour feathers，pluma and tail feathers between both birds，but residues of pp’-DDD in the breast contour feathers and tail feathers of the Oriental White Stork was significantly higher than that of the Siberian White Crane.