Organochlorine pesticide residues in catfish, Tachysurus thalassinus (Ruppell, 1835), from the South Patches of the Bay of Bengal

摘要

Organochlorine pesticides (p,p'DDT, p,p'-DDD, p,p'-DDE, aldrin, lindane, and heptachlor) were measured in muscle tissue of catfish (Tachysurus thalassinus) during the dry and wet season. Catfish were collected from the South Patches of the Bay of Bengal during October -December 1997 and May-July 1998. Tissue residues were analyzed by using gas-chromatography (GC) in electron capture detector (ECD) mode and were verified by thin layer chromatography (TLC). The pesticide residues levels were found in order of ∑ DDT>Heptachlor>Lindane>Aldrin.