Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis
International Journal of Science, Technology and Society
Volume 3, Issue 4, July 2015, Pages: 156-163
Received: May 21, 2015;
Accepted: Jun. 3, 2015;
Published: Jun. 25, 2015
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Popoola Samuel Olatunde, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Nubi Olubunmi Ayoola, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Oyatola Opeyemi Otolorin, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Adekunbi Falilu Olaiwola, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Fabunmi Gaffar Idera, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Nwoko Chidinma Jecinta, Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria
Lagos Harbour (a Lagos lagoon axis) serves as a route for goods transportation, coupled with proliferation of urban and industrial establishments. The socioeconomic activities within has often led to the introduction of substantial wastes, marine debris and spills into the harbor. In an attempt to monitor the pollution status of aquatic organisms in the Lagos Lagoon axis, vertical profiling of the trace metal contents was carried out to reveal, the vertical variations in the monthly trends of; Cu, Zn, Pb, Cr, Mn, Ni, and Fe between August and October,2014.Chemical analysis was carried out in the Nigerian institute for oceanography and marine research (NIOMR) wet and instrumentation laboratory, using aqua regia digestion methods and 200AA series Atomic Absorption Spectrophotometer. The observed levels of the trace metals shows a decreasing order of abundance; Fe > Cr > Pb > Mn> Ni > Zn > Cu; Fe > Pb > Cr > Ni > Mn > Zn >Cu and Fe > Cr > Pb > Ni > Mn > Zn > Cu for 0.2meters, 2.6meters and 5.2meters respective depth profile. This study reveal a general contamination trends; medium depth (2.6m) > bottom depth (5.2m) > surface depth (0.2m). Higher metal concentrations were observed in October. All observed trace metals except Cu, Zn and Fe exhibit high contamination ratio. The trace metals distributions in the study area are majorly controlled by; precipitations, dilution, anthropogenic activities and Sea/fresh water incursion from the Atlantic Ocean and the adjourning creeks. A strong regulation in the indiscriminate waste dump and a check in the socioeconomic activities in the Lagos Harbour are very essential.
Popoola Samuel Olatunde,
Nubi Olubunmi Ayoola,
Oyatola Opeyemi Otolorin,
Adekunbi Falilu Olaiwola,
Fabunmi Gaffar Idera,
Nwoko Chidinma Jecinta,
Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis, International Journal of Science, Technology and Society.
Vol. 3, No. 4,
2015, pp. 156-163.
Turner, A. (1996), Trace metals portioning in estuaries importance of salinity and particulate concentration. Marine Chemistry, 54, pp27 – 39.
Okoye, C.O,. Onwuka,S.U. and Obiakor, M.O.(2011). Pollution studies in Lagos and its environmental consequences. A review. Tropical built environment journal. 1(1) pp42-57.
Amaeze, N.H. (2009). Comparative account of the Microfauna and Planktonic Communities of two polluted creeks associated with the Lagos Lagoon System. MSc. Thesis, University of Lagos, 2009.
Popoola, S.O,.Hauwa, M,.Oyeleke P.O.and Odeyemi,O.E.(2014).The effect of Ambient particulate metal concentrates in Lagos metropolis and the adjoining water bodies, Northwest f Lagos Lagoon. Scientific Research Journal (SCIRJ) vol(11), pp29-57.
Olatunji, A. S. and Abimbola, A.F.(2010).Geochemical Evaluation of the Lagos Lagoon Sediments.World Applied Sciences Journal 9 (2): 178-193.
Balogun, K. J., Ladigbolu, I.A. and Olajire, E.D. (2011).Hydrochemistry of a Tropical harbor: Influence of Industrial and Municipal inputs. Journal of Appl. Science and Environmental management, Vol. 15 (4) pp 575 – 581.
Ajao, E. A.(1996) .Review of the state of pollution of the Lagos Lagoon. NIOMR Tech. Paper No. 106.
Onyeama, I. C. and Popoola, R.C.(2013). The physico-chemical characteristics, chlorophyll a levels and phytoplankton dynamics of the east mole area of the Lagos harbor Lagos. Journal of Asian Scientific Research, 3(10) pp 995-1010.http://aessweb.com/journal-detail.php?Id=5003.
Nubi,O.A., Ajao,E.A.and NubiA.T. (2008). Pollution assessment of the impact of coastal activities on Lagos Lagoon, Nigeria Science World Journal, vol. 3(2), pp. 83-88.
Nubi,O.A., Oyediran, L.T. and Nubi, A.T. (2011).Inter-annual trends of heavy metals in marine resources. African Journal of Environmental Science and Technology Vol. 5(2), pp. 104-110
Omatshola, M.E. and Adegoke, O.S.( 1981). The tectonic evolution and Cretaceous a stratigraphy of the Dahomey Basin. J. Mining and Geol., 54: 65-87.
Balogun,K.J. and Ladigbolu, I. A. (2011). Nutrients and Phytoplankton Production Dynamics of a Tropical Harbor in Relation to Water Quality Indices ; journal of America science 6(9) 2010 pp. 261 – 275.
Balogun, K.J., Adedeji,A.k. andLadigbolu,I.A.(2014). Primary production estimation in the euphotic zone of a tropical harbor ecosystem, Nigeria. International Journal of Scientific and Research Publications, Volume 4, Issue 8, August 2014 1 ISSN 2250-3153.
APHA. (1998). Standard method for the examination of water and waste water. 20th Edn., New York: American Public and Health Association.
Nishida,H., Miyai,M,.Tada,F. and Suzuki S.(1982) .Computation of the Index of Pollution Caused by Heavy Metals in River sediment, Environmental Pollution Series B, Chemical and Physical, Elsevier, Vol. 4, No. 4, 1982, pp. 241- 248. http://dx.doi.org/10.1016/0143-148X (82)90010-6.
Hakanson, L.(1980). An ecological risk index for aquatic pollution control a sediment logical approach. Water Res.14, (2), pp 975.
Lee, J.S,. Chon, H.T,. Kim, J.S,. Kim, K.W. and Moon, H.S.(1998) .Enrichment of Potentially Toxic Elements in Areas Underlain by Black Shales and Slates in Korea,” Environmental Geochemistry and Health, Vol. 20, No. 30, pp. 135-147.
World Health Organisation, (1993). Revision of WHO Guidelines for Water Quality. WHO Geneva.
Taylor, S.R. and McLennan, S.M. (1995). The geochemical evolution of the continental crust. Reviews of Geophysics, 33, pp241-265.
Tomlinson, D.L,. Wilson, J.G., Harris, C.R. and Jeffney,D.W. (1980). Problems in the assessment of heavy metals levels in estuaries and the formation of pollution index. Helgol. Wiss. Meeresunters, pp33, 566.
Davis, J.C. (1986).Statistics and Analysis in Geology. John Wiley and Sons, New York, 64pp.
Dara, S.S. and Srivastava R. (2009). Energy environment ethics and society. Revised edition, S.Chand& company limited, Ramnagar, New Delhi, 426p.
Onyema, I.C.(2013). The Physico-Chemical Characteristics and Phytoplankton of the Onijedi Lagoon, Lagos. Nature and Science, 11(1) pp 127-135.
Onyema, I.C. (2010). Phytoplankton diversity and succession in the Iyagbe lagoon, Lagos. European Journal of Scientific Research, 43(1), pp61-74.
Onyema, I.C. (2011). The Water Chemistry and Periphytic Algae at a Cage culture Site in a Tropical Open Lagoon in Lagos. actaSATECH, 4(1): 53-63.
Brown, A.C. and. Oyenekan,J.A(1998). Temporal variability in the structure of benthic macro-fauna communities of the Lagos lagoon and harbour, Nigeria. Pol Arch Hydrobiol, 45: 45-54.
Chukwu, L. O. and Nwankwo, D. I. (2004). The impact of land based pollution on the hydro-chemistry and macro benthic community of a tropical West African Creek from the Nigerian territorial waters. The Ekologia.(2): pp19. African Journal of Environmental Science and Technology Vol. 5(2), pp. 104-110.
Onyema, I.C. (2008). Phytoplankton biomass and diversity at the Iyagbe lagoon Lagos, Nigeria. University of Lagos, Akoka. Department of Marine Sciences.
Onyema, I.C,.Nwankwo, D.I. and Owolabi, K.O.(2008). Temporal and spatial changes in the phytoplankton dynamics at the tarkwa-bay jetty in relation to environmental characteristics. Journal of Ecology Environment and Conservation, 14(4): pp1-9.
Niencheski, L.F., Windom, H.L. and Smith, R. (1994). Distributions of particulate trace metal in Patos Lagoon Estuary (Brazil). Marine Pollution Bulletin, 28, pp96-102.