International Journal of Biochemistry and Biophysics Vol. 5(4), pp. 83 - 90
DOI: 10.13189/ijbb.2017.050402
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Organic Pesticides Concentration in Water, Sediments and Fish Tissues obtained from Ogbakiri River in the Niger-Delta Region, Nigeria and Its Health Implication on Human Consumption


Chinedu J. Okonkwo , Idongesit E. Archibong *, Chioma J. Okereke , Justice O. Osuoha , Uche C. Njoku
Department of Biochemistry, Faculty of Science, University of Port-Harcourt, Nigeria

ABSTRACT

Organic pesticides concentrations in tissues of Chrysichthys nigrodigitatus (catfish) and Liza falcipinis (mullet) sampled from Ogbakiri River, Niger Delta, Nigeria were investigated to find out the extent of pesticide contamination in the river and its possible health implication on human consumption assessed. Pesticides were analyzed using gas chromatography coupled with electron capture detector (GC-ECD). The concentration of pesticides ranged from 0.0010±0.0001 to 0.0095±0.0002 µg/l and 0.0007±0.0001 to 0.0110±0.0002µg/g in water and sediments, respectively. Similarly, pesticides concentration in fish tissues ranged from 0.0002±0.0001 to 0.0185±0.0002µg/g and 0.0003±0.0001 to 0.0098±0.0002µg/g in liver and muscle respectively. Moreso, to assess health risk concerns, the measure concentrations of pesticide residues were compared with regulatory benchmarks. Risk hazard estimates of dichlorodiphenyltrichloroethanes, Chlordanes, hexachlorobenzene in the studied fishes showed no potential adverse effect to human consumption at the observed concentrations. The cancer risk was also evaluated according to the guideline as stipulated by USEPA and was within acceptable risk range of 10-4. Thus exposed populations are not at cancer risk through consumption of fish from this river.

KEYWORDS
Organic Pesticides, GC-ECD, Risk Hazard Estimates, Cancer Risk

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Chinedu J. Okonkwo , Idongesit E. Archibong , Chioma J. Okereke , Justice O. Osuoha , Uche C. Njoku , "Organic Pesticides Concentration in Water, Sediments and Fish Tissues obtained from Ogbakiri River in the Niger-Delta Region, Nigeria and Its Health Implication on Human Consumption," International Journal of Biochemistry and Biophysics, Vol. 5, No. 4, pp. 83 - 90, 2017. DOI: 10.13189/ijbb.2017.050402.

(b). APA Format:
Chinedu J. Okonkwo , Idongesit E. Archibong , Chioma J. Okereke , Justice O. Osuoha , Uche C. Njoku (2017). Organic Pesticides Concentration in Water, Sediments and Fish Tissues obtained from Ogbakiri River in the Niger-Delta Region, Nigeria and Its Health Implication on Human Consumption. International Journal of Biochemistry and Biophysics, 5(4), 83 - 90. DOI: 10.13189/ijbb.2017.050402.