KNUSTSpace >
Research Articles >
College of Science >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/15000
|
Title: | Distribution and ecological risks of toxic metals in the topsoils in the Kumasi metropolis, Ghana |
Authors: | Darko, Godfred Dodd, Matt Nkansah, Marian Asantewah Aduse-Poku, Yaw Ansah, Eugene Wemegah, David Dotse Borquaye, Lawrence Sheringham |
Keywords: | soil contamination urban soil toxic heavy metals |
Issue Date: | Jul-2017 |
Publisher: | Cogent Environmental Science |
Citation: | Cogent Environmental Science |
Abstract: | The distribution, and ecological risks due to toxic metals in topsoils of an
urban commercial centre of Kumasi metropolis were determined. Concentrations
of heavy metals in the samples were initially screened using field portable X-ray
fluorescence spectrometer prior to confirmation on an inductively coupled plasmamass
spectrometer. The results from the two instruments correlated well with high
linearity (R2 > 0.70). Concentrations of metals were in the order: Fe (45246.15 mg/
kg) > Mn (347.86 mg/kg) > Zn (176.40 mg/kg) > V (173.10 mg/kg) > Cr (125.12 mg/
kg) > Pb (53.47 mg/kg) > Ni (43.16 mg/kg) > Cu (39.85 mg/kg) > As (4.59 mg/
kg) > Sn (3.69 mg/kg) > Cd (0.46 mg/kg) > Hg (0.28 mg/kg). Multivariate and geostatistical
analyses exploring various hazard indices such as geo-accumulation,
contamination, pollution load and ecological risks all suggest contamination of
the topsoils with toxic metals and that the contamination due to Pb, Cu, Ni, Cr and
Zn is mainly derived from anthropogenic origins whereas, As, Hg, Mn, V, Sn and Cd
contaminations are attributable mainly to geological and atmospheric depositions |
Description: | This article is published by Cogent Environmental Science and is also available at https://doi.org/10.1080/23311843.2017.1354965 |
URI: | 10.1080/23311843.2017.1354965 http://hdl.handle.net/123456789/15000 |
Appears in Collections: | College of Science
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|