Distribution and fate of persistent organochlorine pesticides in coastal marine environment of Mumbai.
Multi-compartment monitoring of residue levels of OCPs in coastal marine environment of Mumbai has been studied. The concentration of total HCHs in seawater varied from 0.16 to 15.92 ng/L and concentrations of total DDT varied from 3.01 to 33.21 ng/L. The total HCH concentration in the sediment samples was in the range of 3.8 to 16.2 ng/g. Gamma-HCH contributed almost 55% to the total HCH. In sediment samples the DDT has higher mean concentration in comparison to its metabolite DDE and DDD. The concentration of total HCHs in different marine species varied from 0.87 to 33.73 ng/g and concentrations of total DDT varied from 0.38 to 34.1 ng/g. The variation in the beta-HCH in different compartments is not significant and this could be due to the high persistence and metabolically inactive nature of this isomer. The alpha-HCH is found to be more dominant in fish samples whereas the gamma-HCH is major contributor in the sediment samples.
Pandit
G G
GG
Environmental Assessment Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India. ggp@apsara.barc.ernet.in
Sahu
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SK
Sharma
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S
Puranik
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VD
D000818:Animals; D049872:Bivalvia / Q000378:metabolism; D003386:Brachyura / Q000378:metabolism; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism; D019015:Geologic Sediments / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000378:metabolism; D007194:India; D007306:Insecticides / Q000032:analysis* / Q000378:metabolism; D009132:Muscles / Q000737:chemistry; D033561:Penaeidae / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis*; D012623:Seawater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical