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Geochemical assessment of toxic metals stocking in top-soil within the area of limestone quarry in Gombe of North-eastern Nigeria

Usman, UA, Kumar, Prashant, Abdulkadir, AB, Kamale, HI, Sadiq, HM, Muhammed, DD, Ibrahim, Y and Wulo, IB (2016) Geochemical assessment of toxic metals stocking in top-soil within the area of limestone quarry in Gombe of North-eastern Nigeria African Journal of Environmental Science and Technology, 10 (9). pp. 283-291.

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Abstract

This work presents an assessment of geochemical toxic metal stocking in top-soil within the area of a limestone quarry in Gombe State. Samples of topsoil from the area of a limestone quarry in Gombe (North-eastern Nigeria) were collected to analyse levels of hazardous substances such as of Hg, Fe, Zn, Ni, Mn, Cu, Cr, Cd and Pb. A total of 24 topsoil samples were collected around the radius of 0.5 km from the blasting arena. Additionally, six background samples were also collected from an unexploited reserved area that was ~6 km far from the main sampling location. Two rocks of limestone samples from blasting area were also collected and analysed for heavy metals as a reference. All the samples were processed and extracted with nitrate acid solution and analysed using smart spectrophotometer methods. The results suggested varying organic contents in soil, sand, silt, clay and pH. All these parameters are correlated with those of unexploited samples. Limestone rocks samples displayed a high concentration of Fe and Mn improvement. Toxic metals concentrations (mg/kg) in top-soil with background levels were discovered in Hg, Fe, Mn, Ni, Zn, Cd, Cu, Cr and Pb. Residual phases exhibited the lowest enrichment for most metals possibly, because of high loamy sand content. The situated enrichment advocates influence from mining activities. The results especially geoaccumulation index assessment exhibit below detected limit to 0.20 mg/kg for Pb which is uncontaminated by Lead when compared with the USA threshold limit of particulate metal concentration. Conversely, the other hazardous metals ranged from 1 to 2, indicating the area is contaminated moderately. The exposure to dust containing high silica in quarry workers leads to deterioration of pulmonary function and hence suggesting a need for protective measures of the quarry workers.

Item Type: Article
Subjects : Civil & Environmental Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Usman, UAUNSPECIFIEDUNSPECIFIED
Kumar, PrashantP.Kumar@surrey.ac.ukUNSPECIFIED
Abdulkadir, ABUNSPECIFIEDUNSPECIFIED
Kamale, HIUNSPECIFIEDUNSPECIFIED
Sadiq, HMUNSPECIFIEDUNSPECIFIED
Muhammed, DDUNSPECIFIEDUNSPECIFIED
Ibrahim, YUNSPECIFIEDUNSPECIFIED
Wulo, IBUNSPECIFIEDUNSPECIFIED
Date : September 2016
Identification Number : 10.5897/AJEST2016.2157
Copyright Disclaimer : Copyright © 2016 Author(s) retain the copyright of this article. Published under the terms of the Creative Commons Attribution License 4.0 International License
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 16 Sep 2016 14:55
Last Modified : 31 Oct 2017 18:43
URI: http://epubs.surrey.ac.uk/id/eprint/812212

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