@article{jephh20231123,
author={{Anjorin, Oladele F. and Solomon, Mariam D. and Kiri, Jaryum H. and Dabak, Jonathan D. and Gazuwa, Samuel Y. and Mafulul, Simon G. and Daspan, Raymond I. and Okoh, Elizabeth O. and Laka, Isaac S. and Onche, Jane-Rose and Wuti, Isa S.},
title={Pollution Levels from Selected Manual Stone Crushing Units in North Central Nigeria and Their Health Effects},
journal={Journal of Environment Pollution and Human Health},
volume={11},
number={2},
pages={37--45},
year={2023},
url={http://pubs.sciepub.com/jephh/11/2/3},
issn={2334-3494},
abstract={Background: When stones are crushed, the finer dust gets airborne and escapes as fugitive emissions, constituting dust pollution problems in the vicinity with severe adverse effects on the ambient air quality and human health. Methodology: In this study, active sampling method was deployed to sample and obtain the ambient concentrations of CO, SO2, H2S and PM (of sizes 2.5 and 10 microns) in the fugitive emissions from selected manual stone crushing sites in North Central Nigeria. The trapped particles sampled were analysed for particulate-associated heavy metals such as Cd, Co, Cr, Cu, Pb, Mn, Ni, Fe, and Zn by Atomic Absorption Spectrometry (AAS). Principal Findings: The observed mean concentration of CO, SO2 and H2S sampled were 0.12 mg/m3, 0.06 mg/m3 and 0.004 mg/m3, respectively. The mean concentration of PM2.5 was observed to be 26.5 ¦Ìg/m3 (ranged from 8 ¦Ìg/m3 to 70 ¦Ìg/m3) which is about 76.7 % higher than the World Health Organization (WHO) air quality guidelines (15 ¦Ìg/m3 for 24- mean for PM2.5). The Mean concentration of PM10 was observed to be 54.36 ¦Ìg/m3 (ranged from 17 ¦Ìg/m3 to 143 ¦Ìg/m3) which is about 20.8 % higher than the World Health Organization (WHO) air quality guidelines (45 ¦Ìg/m3 for 24-mean for PM10). AAS analysis revealed that metal- bearing particulates have significant levels of the selected heavy metals except copper that was below detection limit: Cr, Mn, Fe, Pb, Zn, Ni, Cd and Co were respectively, 48.0 mg/m3, 82.0 mg/m3, 140.0 mg/m3, 202.0 mg/m3, 34.0 mg/m3, 1403.0 mg/m3, 21.0 mg/m3, 60.0 mg/m3. Conclusion: All the metals (Pb, Ni and Cd), classified by IARC as carcinogenic in humans (group 1) greatly exceeded on average the annual EU¡¯s limits (500, 20, 6 and 5 ng/ m3 respectively).},
doi={10.12691/jephh-11-2-3}
publisher={Science and Education Publishing}
}