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Eco-toxicological approach as a contribution to Integrated water Resources Management of Okpara dam at Kpassa in Benin; Toxic metals (Pb, Hg, As and Cd) assessment in Fishes (Tilapia Guineensis) and Freshwater

Author Affiliations

  • 1Laboratory of Applied Hydrology / Faculty of Sciences and Technology / University of Abomey-Calavi, BENIN
  • 2 Laboratory of Geology, Mine and Environment / Faculty of Sciences and Technology / University of Abomey-Calavi, BENIN
  • 3 WASCAL / Laboratory of Applied Hydrology / Faculty of Sciences and Technology / University of Abomey-Calavi, BENIN
  • 4 Houdegbe North American University (HNUB), BENIN

Res.J.chem.sci., Volume 4, Issue (10), Pages 24-29, October,18 (2014)

Abstract

In this study, the concentrations of toxic metals (Pb, Hg, As and Cd) in fishes (Tilapia Guineensis) and freshwater from Okpara dam at kpassa near Parakou in Benin, were assessed using Atomic Absorption Spectrophotometer (AAS) method at the laboratory of IRGIB Africa, highly accredited. In water samples, the mean concentrations of Pb, Hg, Cd and As where 0.0174, 0.011, 0.00046 and 0.001respectively while the standard values are 0.05, 0.001, 0.005, and 0.05 respectively. As for fishes specimens, the observed mean concentrations for Pb, Hg and Cd were 0.039, 0.032 and 0.003 compared to 0.30, 0.50 and 0.050 mg/kg respectively as standard values. Here As were insignificant in analysed fishes. Results also show that concentrations in fish’s specimen do not correlate with those in water. According to the background knowledge about contaminants, a part of metals carried from the catchment is adsorbed onto suspended particles and settles to the sediment. Also, the presence of metals in fishes confirms that metals were available in aquatic ecosystem. This is not surprising when we know that no system of management of solid and liquid waste in the watershed exit. Indeed, the study catchment belongs to farm area with chemical use and a quick urbanization zone. Okpara dam is vital for human health and environmental well-being in the basin. Overall results indicate that fish and freshwater from Okpara dam were slightly contaminated by toxic metals but concentrations did not exceed standers. However, intensive and regular studies are required for monitoring. Also, iinformation, education and communicationeducation are very important for behaviour change by reparians in order to prevent levels of contaminations that would not be easy to address.

References

  1. D'Anjou R.M., Bradley R.S., Balascio N. L. and Finkelstein, Climate impacts on human settlement and agricultural activities in northern Norway revealed through sediment biogeochemistry, Proceedings of the National Academy of Sciences of the United States of America, 109 (50), 20332-20337, (2012)
  2. Zhang Z., HE L., Li J., and Wu, Z.-b., Analysis of heavy methals of Muscle and Intestine Tissue in Fish-Iin Banan Section of Chongqing from three Georges Reservoir, China, Polish J.Envir stud , 16 (6), 949-958 (2007)
  3. Kumar B., Mukherjee D.P., Kumar S., Mishra M., Praskash D., and Sharma S. S., Bioaccmulation of heavy metals in muscle tissue of fishes from selected aquaculture ponds in east Kolkata wetland, Annals of Biol. Res, 2 (5), 125-134, (2011)
  4. El-Moselhy Kh.M, Othman A.I, El-Azem H. Abd, and El-Meturally M., Bioaccumulation of heavy metals in some tissues of fish in the Red Sea, Egypt, Egyptian JBAS, 1(2), 97-105, (2014)
  5. Suanon F., Biaou D., Mama D., Lyde A and Tométin A.L., Study of sediment of dam of Okpara (Benin): Physico-chemical characterization and speciation of Iron and Manganese, JWARP, 709-714, (2013)
  6. Tométin A.L., Mama D., Zogo N.D., Ousmane B., and Bawa L.M., Eutrophication, sediment, Phosphorus fractionation and short mobility study in the surface and under profile sediment of a wate dam (Okpara, Benin, West Africa). J.Sc. Env. Manag , 17(4), 517-526, (2013)
  7. Opaluwa O., Aremu M., Ogbo L., Magaj J. and Odiba I., Assessment of heavy metals in water, fish and sediments from UKE stream, Nasarawa state, Nigeria, CWE , 7 (2), 213-220, a (2012)
  8. PADPAQ, Direction des Pêches, Textes législatifs et reglementairesur l'assurance qualité des Produits et Denrées alimentaire d'origineHalieutique au Benin. Arrèté n°0362/ MAEP/D-CAB/SGM/DRH/DP/AS du 30 octobre 2007 portant fixation des teneurs maximales pour certains contaminants, (2007)
  9. Bénin, Decret n°2001-094 du 20 fevrier 2001 fixant les normes de qualité de l'eau potable en République du Bénin, (2001)
  10. Zogo D., Soclo H., and Gbaguidi M.B., Distrbution des résidus et de fer , de Manganèse le long de la colonne d'une eau en cours d'euthrophisation; cas du barrage de l'Okpara à Prakou au Benin, Tribune de l'Eau 642, 3-14, (2007)
  11. Prudencio A.T., TOKO I.I., Jacob A.Y., and Patrick K.,Caracterisation des pesticides chimiques utilisés en production cotonnière et impact sur les indicateurs économique dans la commune de Banikoara, Int. J. Biol. & Chem Sci 5 (5), 1828-1841, (2011)
  12. Agbohessi T.P., TOKO I.I. and Patrick K., Etat des lieux de la contamination des écosystèmes aquatiques par les pesticides organochlorés dans le bassin cotonner béninois, Cahiers Agriculture, 21 (1), 1-68, (2012)
  13. Hossain M., Sujaul I. M., and Nasly M.A., Water quality Index: an indicator of surface water pollution in Eastern part of Peninsular Malaysia, Res. J. of Recent Sci., 2(10), 10-17, (2013)
  14. Noorrbakhsh J., Seyedmalleh E.S, An Evaluation of water Quality from Siahrod River and Babalrood River by NSFWQI Index, CW E. , 9 (1), 59-64, (2014)
  15. Mbaye, Interdiction de l'endosulfan dans les pays du Sahel en Afrique de l'Ouest, Rapport de consultation. Groupe de travail PAN/IPEN sur les pops, (2008)
  16. Ezénwa L.I., Awotoye O. and Ogbonna P.C, Spatial Distribution of heavy metals in soil and plan in quarry site in Southern Nigeria, Res.J. of Chem. Sci. 4 (8), 1-6, (2014)
  17. Nwajei G. and Okwagi P., Distribution of selected Trace Metals in Fish Parts from the River Nigeria; short communication. Res. J. of Recent Sci., 1(1), 81-84, (2012)
  18. Okoronkwo N., Odoemalam, S. and Ano, O. Levels of toxic elements in soils of abandoned waste dump site, African J. Biotech, 1233-1241, (2006)
  19. Bernard E., Jimoh A. and Odigure J., Heavy metals removal from industrial wastewater by actvated Carbon prepared from coconut shell, Res J. of Chem. Sci. , 3(8), 3-9, (2013)
  20. Willanueva M.H., Kogevinas M., Cordier S. and Templeton M., Assessing Exposure and Heath consequence of chemicals in drinking water: current state of knowledge and Research needs, Environ Hearth Perspect, 122(3), 213-221, (2014)