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dc.contributor.authorOkoro, HK-
dc.contributor.authorFatoki, Olalekan S-
dc.contributor.authorAdekola, Folahan A-
dc.contributor.authorXimba, Bhekumusa J-
dc.description.abstractGeochemical 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.en_US
dc.description.sponsorshipCape Peninsular University of Technology, Cape Town, South Africa for URF grant 2011/2012 offered H.K. Okoro for his doctoral research studies.en_US
dc.publisherAfrican Journals Onlineen_US
dc.subjectMarine sedimenten_US
dc.subjectX-Ray diffractometryen_US
dc.subjectHeavy metalsen_US
dc.titleGeochemical assessment of sediment in cape town harbour, south africaen_US
Appears in Collections:Appsc - Journal Articles (DHET subsidised)
Prof. Bhekumusa Jabulani Ximba
Prof. Olalekan S. Fatoki
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