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Bioaccumulation of metals in black mussels (Mytilus galloprovincialis) in Cape Town Harbour, South Africa

Author

Listed:
  • Olalekan S. Fatoki

    (Faculty of Applied Science Cape Peninsula University of Technology)

  • Hussein K. Okoro

    (Faculty of Applied Science Cape Peninsula University of Technology)

  • Folahan A. Adekola

    (University of Ilorin)

  • Bhekumusa J. Ximba

    (Faculty of Applied Science Cape Peninsula University of Technology)

  • Reinette G. Snyman

    (Cape Peninsula University of Technology)

Abstract

Heavy metal concentrations in black mussels (Mytilus galloprovincialis) collected from Cape Town Harbour were determined using energy dispersive X-ray fluorescence (EDXRF) and inductively coupled plasma-mass spectrometry (ICP-MS). EDXRF showed that tissue portions of the mussels contained K, Ca, Fe, Cu, Zn, Si, Sr, Al and Au, while the shell portion contained K, Ca, Fe, Cr, Zn, Si and Sr. In addition to these metals, EDXRF also revealed the presence of Al in the shells of the largest mussels. Highest concentrations of Cu and Zn were recorded in the tissues of the smallest mussels. Due to poorer detection limits of EDXRF, ultra-trace elements (Mn, Pb, As, Hg, V, Cr, Sn, Cd, Ni and Co) were determined in mussels using ICP-MS. The average metal concentrations found in the mussels are as follows; Pb (7.30 ± 0.67), Cd (1.98 ± 0.13), Hg (4.92 ± 0.60), As (6.94 ± 0.04), Sn (2.63 ± 0.13), Ni (1.88 ± 0.05), Cr (3.54 ± 0.05), V (4.17 ± 0.23), Co (0.74 ± 0.01) and Mn (35.20 ± 1.46). ANOVAs, Pearson correlation and principal component analysis (PCA) were employed in data analysis. The order of the abundance of metals in the mussels is Mn > Pb > As > Hg > V > Cr > Sn > Cd > Ni > Co. The average metal concentrations found in the mussels were higher than the permissible Food and Agriculture Organization (FAO) limits and other international guidelines.

Suggested Citation

  • Olalekan S. Fatoki & Hussein K. Okoro & Folahan A. Adekola & Bhekumusa J. Ximba & Reinette G. Snyman, 2012. "Bioaccumulation of metals in black mussels (Mytilus galloprovincialis) in Cape Town Harbour, South Africa," Environment Systems and Decisions, Springer, vol. 32(1), pages 48-57, March.
    • Handle: RePEc:spr:envsyd:v:32:y:2012:i:1:d:10.1007_s10669-011-9370-5
    DOI: 10.1007/s10669-011-9370-5
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    Cited by:

    1. Chee Kong Yap & Moslem Sharifinia & Wan Hee Cheng & Salman Abdo Al-Shami & Koe Wei Wong & Khalid Awadh Al-Mutairi, 2021. "A Commentary on the Use of Bivalve Mollusks in Monitoring Metal Pollution Levels," IJERPH, MDPI, vol. 18(7), pages 1-24, March.

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