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Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire

Received: 2 April 2022    Accepted: 7 May 2022    Published: 19 May 2022
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Abstract

Metallic contamination of the environment by mining activities constitute a major problem, regarding the exposure risks of the populations and wildlife. Unfortunately, few data are available on metallic contamination of water resources in West Africa. The present study aims to understand the distribution, mobility and potential toxicity of some trace metals (Co, Cr and Zn) in mining sediments and their impact on human health. Sediment samples were analysed for total metal concentration by acid digestion and then by chemical fractionation of trace metals using the modified BCR sequential extraction method. The pollution index results for Cr, Co, and Zn, in the study area sediments, indicated the spread of heavy metal pollution. The sequential extraction demonstrated that most of the trace metals such as Cr (71.02-84.32%), Co (62.00-72.83%) and Zn (66.61-72.01%) were present in a residual form. Overall, Co, Cr and Zn exhibited low individual contamination in the studied sediments. Indeed, their IFC values were less than 1. The GCF results (GCF <6) showed an overall low risk potential related to the complex influence of metals on the environment. Generally, the MRI values for trace metals (Co, Cr and Zn) are below 150, indicating a low environmental risk in all the studied mining areas.

Published in Science Journal of Chemistry (Volume 10, Issue 3)
DOI 10.11648/j.sjc.20221003.12
Page(s) 61-72
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), 2024. Published by Science Publishing Group

Keywords

Trace Metal, Fractionation, BCR-Sequential Extraction, Potential Ecological Risk

References
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    Koffi Pierre Dit Adama N’goran, N’guessan Louis Berenger Kouassi, Donourou Diabate, Ahbeauriet Ahmed Ouattara, Kakou Charles Kinimo, et al. (2022). Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire. Science Journal of Chemistry, 10(3), 61-72. https://doi.org/10.11648/j.sjc.20221003.12

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    Koffi Pierre Dit Adama N’goran; N’guessan Louis Berenger Kouassi; Donourou Diabate; Ahbeauriet Ahmed Ouattara; Kakou Charles Kinimo, et al. Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire. Sci. J. Chem. 2022, 10(3), 61-72. doi: 10.11648/j.sjc.20221003.12

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    Koffi Pierre Dit Adama N’goran, N’guessan Louis Berenger Kouassi, Donourou Diabate, Ahbeauriet Ahmed Ouattara, Kakou Charles Kinimo, et al. Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire. Sci J Chem. 2022;10(3):61-72. doi: 10.11648/j.sjc.20221003.12

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  • @article{10.11648/j.sjc.20221003.12,
      author = {Koffi Pierre Dit Adama N’goran and N’guessan Louis Berenger Kouassi and Donourou Diabate and Ahbeauriet Ahmed Ouattara and Kakou Charles Kinimo and Koffi Marcellin Yao and Albert Trokourey},
      title = {Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire},
      journal = {Science Journal of Chemistry},
      volume = {10},
      number = {3},
      pages = {61-72},
      doi = {10.11648/j.sjc.20221003.12},
      url = {https://doi.org/10.11648/j.sjc.20221003.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjc.20221003.12},
      abstract = {Metallic contamination of the environment by mining activities constitute a major problem, regarding the exposure risks of the populations and wildlife. Unfortunately, few data are available on metallic contamination of water resources in West Africa. The present study aims to understand the distribution, mobility and potential toxicity of some trace metals (Co, Cr and Zn) in mining sediments and their impact on human health. Sediment samples were analysed for total metal concentration by acid digestion and then by chemical fractionation of trace metals using the modified BCR sequential extraction method. The pollution index results for Cr, Co, and Zn, in the study area sediments, indicated the spread of heavy metal pollution. The sequential extraction demonstrated that most of the trace metals such as Cr (71.02-84.32%), Co (62.00-72.83%) and Zn (66.61-72.01%) were present in a residual form. Overall, Co, Cr and Zn exhibited low individual contamination in the studied sediments. Indeed, their IFC values were less than 1. The GCF results (GCF <6) showed an overall low risk potential related to the complex influence of metals on the environment. Generally, the MRI values for trace metals (Co, Cr and Zn) are below 150, indicating a low environmental risk in all the studied mining areas.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Pollution and Ecological Risk Assessment of Traces Metals in the Sediments of Gold Mining in Savanna District (Korhogo and Tengrela), Côte d'Ivoire
    AU  - Koffi Pierre Dit Adama N’goran
    AU  - N’guessan Louis Berenger Kouassi
    AU  - Donourou Diabate
    AU  - Ahbeauriet Ahmed Ouattara
    AU  - Kakou Charles Kinimo
    AU  - Koffi Marcellin Yao
    AU  - Albert Trokourey
    Y1  - 2022/05/19
    PY  - 2022
    N1  - https://doi.org/10.11648/j.sjc.20221003.12
    DO  - 10.11648/j.sjc.20221003.12
    T2  - Science Journal of Chemistry
    JF  - Science Journal of Chemistry
    JO  - Science Journal of Chemistry
    SP  - 61
    EP  - 72
    PB  - Science Publishing Group
    SN  - 2330-099X
    UR  - https://doi.org/10.11648/j.sjc.20221003.12
    AB  - Metallic contamination of the environment by mining activities constitute a major problem, regarding the exposure risks of the populations and wildlife. Unfortunately, few data are available on metallic contamination of water resources in West Africa. The present study aims to understand the distribution, mobility and potential toxicity of some trace metals (Co, Cr and Zn) in mining sediments and their impact on human health. Sediment samples were analysed for total metal concentration by acid digestion and then by chemical fractionation of trace metals using the modified BCR sequential extraction method. The pollution index results for Cr, Co, and Zn, in the study area sediments, indicated the spread of heavy metal pollution. The sequential extraction demonstrated that most of the trace metals such as Cr (71.02-84.32%), Co (62.00-72.83%) and Zn (66.61-72.01%) were present in a residual form. Overall, Co, Cr and Zn exhibited low individual contamination in the studied sediments. Indeed, their IFC values were less than 1. The GCF results (GCF <6) showed an overall low risk potential related to the complex influence of metals on the environment. Generally, the MRI values for trace metals (Co, Cr and Zn) are below 150, indicating a low environmental risk in all the studied mining areas.
    VL  - 10
    IS  - 3
    ER  - 

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Author Information
  • Training Research Unit of Biological Sciences, Department of Mathematic Physic and Chemistry, Peleforo Gon Coulibaly University, Korhogo, C?te d’Ivoire

  • Training Research Unit of Biological Sciences, Department of Mathematic Physic and Chemistry, Peleforo Gon Coulibaly University, Korhogo, C?te d’Ivoire

  • Laboratory of Physical Chemistry, Félix Houphou?t-Boigny University, Abidjan, C?te d’Ivoire

  • Department of Sciences and Technic, Alassane Ouattara University, Bouaké, C?te d’Ivoire

  • Training Research Unit of Biological Sciences, Department of Mathematic Physic and Chemistry, Peleforo Gon Coulibaly University, Korhogo, C?te d’Ivoire

  • Center for Oceanologic Research, Abidjan, C?te d’Ivoire

  • Laboratory of Physical Chemistry, Félix Houphou?t-Boigny University, Abidjan, C?te d’Ivoire

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