Levels of organochlorine pesticide residues in some organs of the Ganges perch, Lates calcarifer, from the Ganges-Brahmaputra-Meghna Estuary, Bangladesh.
Levels of organochlorine pesticide residues (p,p' DDT, DDD, DDE, Aldrin, Dieldrin, Lindane, Heptachlor and BHC) were analysed in the dry and wet seasons in four organs (muscle, liver, gut and egg samples) of Ganges Perch, Lates calcarifer, collected during October-November-December, 1996 and May-June-July, 1997 from the Ganges-Brahmaputtra-Meghna estuary. The residues were analysed by using gas-chromatography (GC) in electron capture detector (ECD) mode and were verified by thin layer chromatography (TLC). Among the four organs analysed, the residues were found in the order egg > gut > muscle > liver. The pesticide residues were found in the order sigmaDDT > Heptachlor > Dieldrin > Aldrin. Higher levels of residues were found during the dry season due to high lipid content in fishes. A positive correlation was observed between the pesticide residues (sigmaDDT and sigmaOCs) and lipid contents of fish, and the correlation was found to be linear. The concentrations of pesticide residues in muscle, liver and gut were below the FAO/WHO (1993) recommended permissible limit except in eggs.
Jabber
S A
SA
Institute of Marine Sciences, University of Chittagong, Bangladesh.
Khan
Y S
YS
Rahman
M S
MS
D000273:Adipose Tissue / Q000737:chemistry / Q000378:metabolism*; D000818:Animals; D001459:Bangladesh; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D004064:Digestive System / Q000737:chemistry / Q000378:metabolism; D004784:Environmental Monitoring / Q000379:methods; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis*; D008099:Liver / Q000737:chemistry / Q000378:metabolism; D009132:Muscles / Q000737:chemistry / Q000378:metabolism; D009928:Organ Specificity; D010063:Ovum / Q000737:chemistry / Q000378:metabolism; D010471:Perches / Q000378:metabolism*; D010573:Pesticide Residues / Q000032:analysis*; D012621:Seasons; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical