Coastal Marine Sediment Heavy Metals Contamination of a Transgressive Mud Beach, Ondo State, Southwest, Nigeria | OMICS International| Abstract
ISSN: 2155-9910

Journal of Marine Science: Research & Development
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  • Research Article   
  • J Marine Sci Res Dev 267,

Coastal Marine Sediment Heavy Metals Contamination of a Transgressive Mud Beach, Ondo State, Southwest, Nigeria

Ayeku Patrick Oluwagbemiga1*, Ajibare Adefemi Olatayo1 and Adeniyi Israel Funso2
1Wesley University, Ondo, Ondo State, Nigeria
2Obafemi Awolowo University, Ile-Ife, Nigeria
*Corresponding Author : Ayeku Patrick Oluwagbemiga, Wesley University, Ondo, Ondo State, Nigeria, Email: [email protected]

Received Date: Feb 07, 2019 / Accepted Date: Mar 01, 2019 / Published Date: Mar 09, 2019


The coastal zone of Nigeria is a home to over 80% of the country’s industries, which have introduced significant levels of heavy metals into the marine environment. All the available literature shows that, this area of transgressive beach, of the Bight of Benin, Southwest, Nigeria, is among the poorly studied in term of heavy metal accumulation and distribution. Ten selected heavy metals (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn) were investigated monthly from six locations for one annual cycle of 2016. Samples were subjected to digestion and Atomic Absorption Spectrophotometer to determine the concentrations of heavy metals. The results showed that all the heavy metals except for Cd did not pose any apparent risk to biota at all levels. The Contamination Factors (CF) of As, Cd and Mn, indicated a moderate contamination (1<CF<3). Degree of contamination (Cdeg) ranged from 5.2 to 12.5 in both seasons. The PLI were less than one in all the sampling stations and seasons. The Enrichment Factor (EF) values for Cd and As obtained for all the locations ranged from 1.9 to 24.9 indicating a significant enrichment of Cd and As in sediment. The Index of Geoaccumulation (Igeo) of all the investigated metals were negative across the sampling stations except Cd, implying that there was low heavy metals contamination across the study area. The heavy metals in sediments of Ondo State coastal marine water might be derived from the mechanically weathered rock materials and anthropogenic activities.

Keywords: Rock; Bight of Benin; Anthropogenic; Geoaccumulation; Enrichment factor

Citation: Oluwagbemiga AP, Olatayo AA, Funso AI (2019) Coastal Marine Sediment Heavy Metals Contamination of a Transgressive Mud Beach, Ondo State, Southwest, Nigeria. J Marine Sci Res Dev 9: 267.

Copyright: © 2019 Oluwagbemiga AP, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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