Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/3655
Title: Geochemical assessment of sediment in Cape Town harbour, South Africa.
Authors: Okoro, HK 
Fatoki, Olalekan S 
Adekola, Folahan A 
Ximba, Bhekumusa J 
Snyman, RG 
Keywords: Marine sediment;Geochemistry;X-ray diffractometry;Dockyard;Heavy metals
Issue Date: 2014
Publisher: Chemical Society of Ethiopia
Source: Okoro, H.K., Fatoki, O.S., Adekola, F.A., Ximba, B.J. & Snyman, R.G. (2014). Geochemical assessment of sediment in Cape Town harbour, South Africa. Bulletin of the Chemical Society of Ethiopia, 28(1):17-28.
Abstract: Geochemical assessment of marine sediments collect ed 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 biot ites, 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 – .022±0.004) mg kg-1. The enrichment factors of Sn, Pb, Zn, Fe, Cd, Al and Hg revealed a nthropogenic 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.
URI: http://hdl.handle.net/11189/3655
http://dx.doi.org/10.4314/bcse.v28i1.3
ISSN: 1011-3924
1726-801X
Appears in Collections:Appsc - Journal Articles (DHET subsidised)
Prof. Bhekumusa Jabulani Ximba
Prof. Olalekan S. Fatoki

Files in This Item:
File Description SizeFormat 
Okoro_HK_Fatoki_OS_Adekola_FA_Ximba_BJ_Snyman_RG_AppSci_2014.pdfMain Article288.65 kBMicrosoft Word XMLView/Open
Show full item record

Page view(s)

31
Last Week
0
Last month
0
checked on Apr 19, 2019

Download(s)

17
checked on Apr 19, 2019

Google ScholarTM

Check


This item is licensed under a Creative Commons License Creative Commons