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

Fatoki, Olalekan S; Okoro, Hussein K.; Adekola, Folahan A.; Ximba, Bhekumusa J; Snyman, Reinette G.

doi:10.1007/s10669-011-9370-5

Cited by 30 publications

(19 citation statements)

References 23 publications

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“…Sediments and water have been used globally to assess the pollution levels in aquatic ecosystems [4][5][6]. Similar studies have been carried out in South Africa [7][8][9][10][11][12]. Sediment particles are made up of materials derived from rock, soil and anthropogenic sources.…”

Section: Introductionmentioning

confidence: 99%

Geochemical assessment of sediment in Cape Town harbour, South Africa

Okoro¹,

Fatoki²,

Adekola³

et al. 2014

Bull. Chem. Soc. Eth.

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ABSTRACT. Geochemical assessment of marine sediments collected from Cape Town harbour was carried out using inductively coupled plasma-mass spectrometry, Fourier-Transform-infrared and X-ray diffractrometry techniques. The clay mineral phase consists of biotites, kaolinites and halites. The ranges of concentrations (mg/kg) of trace metals were: Cd (1.69±0.075 -0.080±0.002), Si (0.37±0.11 -0.023±0.012), Fe (30.01±2.04 -2.23±0.12), Cu (1462±39 -1.51±0.11), Al (19.92±2.24 -1.25±0.13), Sn (63.98±4.97 -1.15±0.38), Pb (252±29 -8.73±1.06), Hg (1.002±0.168 -0.049±0.005) and Zn (1.26±0.07 -0.022±0.004) mg kg -1 . The enrichment factors of Sn, Pb, Zn, Fe, Cd, Al and Hg revealed anthropogenic inputs of these metals into the marine environment. The enrichment factor of Cu was less than 1 and this suggests that its presence was largely due to natural changes. The results are indications of the contributions of trace metals contained in the runoffs from the domestic and urban drains, as well as the inflow storm water. Ship repair activities appeared to constitute a major factor responsible for the higher metal contamination in the dockyard areas. The geomineral analyses revealed the presence of quartz, pyrite, and calcite and carrolite minerals as the main constituents of the marine sediments.

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Section: Introductionmentioning

confidence: 99%

Geochemical assessment of sediment in Cape Town harbour, South Africa

Okoro¹,

Fatoki²,

Adekola³

et al. 2014

Bull. Chem. Soc. Eth.

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“…Heavy metal pollution is a serious and wide spread environmental problem due to the persistence and non-biodegradability of these pollutants (Yuan et al, 2004;Fatoki et al, 2012;Okoro et al, 2014). The levels of heavy metals in the environment have increased during the last few decades due to human activities (Wang et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Fractionation, mobility and multivariate statistical evaluation of metals in marine sediments of Cape Town Harbour, South Africa

Okoro

Fatoki

Adekola

et al. 2014

Chemical Speciation & Bioavailability

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Distribution of possible chemical forms of Al, Si, Sn, Pb, Zn, Fe, Hg, Cd and Cu in marine sediments of Cape Town harbour was investigated using a modified Tessier's sequential extraction procedure and ICP-MS and ICP-AES for heavy metals determination. The mean fractions for all metals at all locations were: 1.5-7196 mg kg -1 for Si, 7.79-7266 mg kg -1 for Al, 161-639 mg kg -1 for Cu, 19-41978 mg kg -1 for Fe, 2.83-5864 mg kg -1 for Zn, 1.45-13.26 mg kg -1 for Cd, 9.87-223 mg kg -1 for Sn, 11.98-979 mg kg -1 for Pb and 0.13-5.93 mg kg -1 for Hg. Si, Al and Zn were mostly associated with Fe-Mn oxides, whereas Sn and Hg were mainly bound to residual and organic matter. Pb existed mainly in the residual and iron/manganese oxide phases while Cd was evenly distributed in all the five phases. The loading plots of heavy metals bound to the various chemical forms, as well as Pearson correlation coefficients, enabled the determination binding relationship. Pb, Sn and Hg exhibited similar binding behaviour which indicated an anthropogenic point source from wastes from the ship maintenance workshop, and the presence of Sn in the organic phase can be identified with the use of anti-fouling paints at the harbour, whereas Al, Fe, Si, Cu and Zn would probably be of natural origin. Lastly Cd probably came from a diffuse pollution sources in the harbour due to its unique binding characteristic. The mobility of heavy metals varied depending on location and the heavy metal type. The mobility of metals followed the order: Si > Zn > Fe > Cu> Al> Cd> Pb > Sn > Hg. The high percentage of Cd and Pb in the bioavailable forms suggested the need to keep close surveillance on these metals because of their high toxicity.

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“…The result of the study showed presences of heavy metal in the fingernails of young school children and Adults in order of Fe > Cu (0.43-6.85 µg/g, Cu 0.01-0.08 µg/g) and for essential trace metals Mg > K (Mg 0.47-1.97 µg/g, K 0.25-1.32 µg/g). Okoro et al (2012) reportedly carry out a study on the heavy metal presence in black mussels (Mytilus galloprovincialis) which was collected from Cape Town Harbour; this was determined using energy-dispersive X-ray fluorescence (EDXRF) and inductively coupled plasma-mass spectrometry (ICP-MS). The tissue of the mussels was found to contain the following metals K, Ca, Fe, Cu, Zn, Si, Sr, Al and Au, while the shell portion was found to contained K, Ca, Fe, Cr, Zn, Si and Sr.…”

Section: Fate Of Heavy Metals In the Environmentmentioning

confidence: 99%

“…Conclusively the average metal concentrations found in the mussels were higher than the permissible limits of Food and Agriculture Organization (FAO) and other international guidelines. More on the heavy metals mobility, seasonal variations of metals, etc., metals geochemical analysis in water and sediments has been carried by Okoro et al (2012Okoro et al ( , 2013Okoro et al ( , 2014a and Okoro and Jimoh (2016), respectively. Ogoyi et al (2011) reported the presence of trace metals from three different environmental samples (water, sediments and microalgae) which were sampled from Winam and Mwanza gulfs of the Lake Victoria.…”

Section: Fate Of Heavy Metals In the Environmentmentioning

confidence: 99%

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

et al. 2018

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This review study is dealing with the recent advances and developments in the metal-organic framework (MOF) materials especially in the aspect of environmental remediation of heavy metals. Its application in some area of technological and mechanical advancement was also considered. The process of its synthesis and characterization was also put into consideration. Metal-organic frameworks can be said to be an exciting new class of nanoporous crystalline materials containing a metal as its central ion surrounded by organic ligands. An overwhelming characteristic of MOFs lies in its surface area which is amazingly large, exceeding those of known best activated carbons and zeolites. There is an increasingly high demand in the application of MOFs for a multitude of environmental uses or application to be used for capturing and separating various unwanted or even environmentally harmful chemicals, elements or materials. The advantage of MOFs over other known adsorbent materials, such as zeolites and carbon black, is that it possesses a far greater surface area along with amazingly great pore properties. In this review the synthesis and characterization of MOFs, the fate of heavy metals, the application of MOFs in heavy metals remediation and other means of heavy metals remediation are well discussed.

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

Cited by 30 publications

References 23 publications

Geochemical assessment of sediment in Cape Town harbour, South Africa

Geochemical assessment of sediment in Cape Town harbour, South Africa

Fractionation, mobility and multivariate statistical evaluation of metals in marine sediments of Cape Town Harbour, South Africa

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

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