alexa Characterization of Surface and Trapped Dust Samples Collected around Human Settlements That are in the Vicinity of Old Mine Tailings in Mpumalanga Province, South Africa
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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Research Article

Characterization of Surface and Trapped Dust Samples Collected around Human Settlements That are in the Vicinity of Old Mine Tailings in Mpumalanga Province, South Africa

Shadung J Moja*, Maphuti G Kwata, Lerato M Sebesho, Khuthadzo G Masindi and Fanyana Mtunzi

Sustainable Resources and Environment Competency, Council of Geoscience, 280 Pretoria Street, Silverton, Pretoria, 0001, South Africa.

*Corresponding Author:
Shadung John Moja
Sustainable Resources and
Environment Competency, Council for Geoscience
280 Pretoria Street, Silverton, Pretoria, 0001, South Africa
Tel no: +27 12 841 1485
Fax no: +27 86 513 2274;
E-mail: [email protected]

Received date: May 23, 2016; Accepted date: June 27, 2016; Published date: July 03, 2016

Citation: Moja SJ, Kwata MG, Sebesho LM, Masindi KG, Mtunzi F (2016) Characterization of Surface and Trapped Dust Samples Collected around Human Settlements That are in the Vicinity of Old Mine Tailings in Mpumalanga Province, South Africa. J Earth Sci Clim Change. 7:360. doi:10.4172/2157-7617.1000360

Copyright: © 2016 Moja SJ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Asbestos mining is banned in many countries because of the health effects that are linked to the inhalation of asbestos dust/fibres. Most of asbestos mine tailings in Mpumalanga Province are not rehabilitated and dust/fibres are easily eroded by weather and settle in sensitive areas like human settlements. Surface and trapped dust samples were collected around human settlements that are in the vicinity of five abandoned and ownerless asbestos mine tailings in October 2015. After collection, surface dust samples were sieved with a 100 μm pore size stainless steel sieve to remove large dust particles. Trapped dust material was collected outdoors around the window panes in houses, on surfaces of old furniture and on windscreens of old cars. Surface and trapped dust samples were treated in the laboratory in preparation of analyses by the Scanning Electron Microscope – Energy Dispersive Spectrometry (SEM - EDS), X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) techniques. Both the serpentine (Mg3SiO5(OH)4 and amphibole [Ca2(Fe, Mg)5Si8O22(OH)2] asbestos mineral groups were detected from the samples. Other silicate minerals present include the quartz (SiO2), talc [Mg3Si3O10(OH)3], feldspar [(KAlSi3O8)- (NaAlSi3O8)-(CaAl2Si2O8)] and smectite [(Na,Ca)0.33(Al, Mg)2 (Si4O10)(OH)2. nH2O]. Non silicates minerals which were detected are hematite (Fe2O3d), chlorite (ClO2-), magnetite (Fe3O4), gibbsite [Al(OH)3], dolomite [Ca-Mg (CO3)2] and ilmenite (FeTiO3). Industrial and biological materials that include fly ash particles, organic and glass fibres were also detected. While the amounts detected are at trace levels, but the continued presence of asbestos minerals around residential areas is of concern.

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