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Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis

Received: 21 May 2015     Accepted: 3 June 2015     Published: 25 June 2015
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Abstract

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.

Published in International Journal of Science, Technology and Society (Volume 3, Issue 4)
DOI 10.11648/j.ijsts.20150304.19
Page(s) 156-163
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Lagos Harbour, Marine Debris, Atomic Absorption Spectrophotometer, Trace Metals, Contamination Ratio, Anthropogenic Activities

References
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    Popoola Samuel Olatunde, Nubi Olubunmi Ayoola, Oyatola Opeyemi Otolorin, Adekunbi Falilu Olaiwola, Fabunmi Gaffar Idera, et al. (2015). Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis. International Journal of Science, Technology and Society, 3(4), 156-163. https://doi.org/10.11648/j.ijsts.20150304.19

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    ACS Style

    Popoola Samuel Olatunde; Nubi Olubunmi Ayoola; Oyatola Opeyemi Otolorin; Adekunbi Falilu Olaiwola; Fabunmi Gaffar Idera, et al. Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis. Int. J. Sci. Technol. Soc. 2015, 3(4), 156-163. doi: 10.11648/j.ijsts.20150304.19

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    AMA Style

    Popoola Samuel Olatunde, Nubi Olubunmi Ayoola, Oyatola Opeyemi Otolorin, Adekunbi Falilu Olaiwola, Fabunmi Gaffar Idera, et al. Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis. Int J Sci Technol Soc. 2015;3(4):156-163. doi: 10.11648/j.ijsts.20150304.19

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  • @article{10.11648/j.ijsts.20150304.19,
      author = {Popoola Samuel Olatunde and Nubi Olubunmi Ayoola and Oyatola Opeyemi Otolorin and Adekunbi Falilu Olaiwola and Fabunmi Gaffar Idera and Nwoko Chidinma Jecinta},
      title = {Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis},
      journal = {International Journal of Science, Technology and Society},
      volume = {3},
      number = {4},
      pages = {156-163},
      doi = {10.11648/j.ijsts.20150304.19},
      url = {https://doi.org/10.11648/j.ijsts.20150304.19},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijsts.20150304.19},
      abstract = {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.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Vertical Profiling and Contamination Risk Assessment of Some Trace Metals in Lagos Lagoon Axis
    AU  - Popoola Samuel Olatunde
    AU  - Nubi Olubunmi Ayoola
    AU  - Oyatola Opeyemi Otolorin
    AU  - Adekunbi Falilu Olaiwola
    AU  - Fabunmi Gaffar Idera
    AU  - Nwoko Chidinma Jecinta
    Y1  - 2015/06/25
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ijsts.20150304.19
    DO  - 10.11648/j.ijsts.20150304.19
    T2  - International Journal of Science, Technology and Society
    JF  - International Journal of Science, Technology and Society
    JO  - International Journal of Science, Technology and Society
    SP  - 156
    EP  - 163
    PB  - Science Publishing Group
    SN  - 2330-7420
    UR  - https://doi.org/10.11648/j.ijsts.20150304.19
    AB  - 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.
    VL  - 3
    IS  - 4
    ER  - 

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Author Information
  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

  • Department of Physical and Chemical Oceanography, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria

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