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Assessment of heavy metal pollution in soils of Jebba Area, Nigeria: Concentrations, source analysis and implications for ecological and human health risks

Oyebamiji, A.O., Olaolorun, O.A.,  Popoola, O.J. and Zafar, T. (2024) Assessment of heavy metal pollution in soils of Jebba Area, Nigeria: Concentrations, source analysis, and implications for ecological and human health risks.  Science of the Total Environment , 173860. This comprehensive research investigates heavy metal contamination in the rapidly developing town of Jebba in north-central Nigeria, which is essential to the nation’s economy due to its agro-allied and non-agro-allied businesses. The research focuses on soil samples, collecting and analysing 137 surface soil samples to assess the presence of 25 distinct metals. After statistical analysis and simple mathematical models are applied to the data, the amounts of harmful metals and their probable causes are revealed. The study identifies geogenic and anthropogenic origins of toxic metals, with some elements exceeding average crustal concentrations. Nonhomogeneous metal dispersion is shown in the region by spatial ...
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HYDROGEOCHEMICAL, CONTAMINATION AND PROBABILISTIC ECOLOGICAL AND HEALTH RISK ASSESSMENTS OF HEAVY METALS IN WATER IN OWO METROPOLIS, SOUTHWEST NIGERIA

  Popoola, O.J., Adeseko, A.A., Sebastine, L.A. and Owolabi, R.R. Hydrogeochemical, Contamination and Probabilistic Ecological and Health Risk Assessments of Heavy Metals in Water in Owo Metropolis, Southwest Nigeria. Earth Sciences Pakistan, 8(1): 28-46 DOI:  http://doi.org/10.26480/esp.01.2024.28.46 This study focuses on assessing the water quality and heavy metal contamination in surface and groundwater in the Owo metropolis. Water, a vital resource for human existence and ecosystem maintenance, plays a crucial role in various activities. The research emphasises the significance of water quality in preventing waterborne illnesses, particularly in areas lacking proper sanitation. The physicochemical characteristics of surface and groundwater were analysed, revealing parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), chloride (Cl), sulphate (SO4), bicarbonate (HCO3), and concentrations of various metals. The results indicate that the studied p...
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A PROBABILISTIC HEALTH RISK ASSESSMENT OF HEAVY METALS IN DUSTS WITHIN SELECTED SCHOOLS IN OWO METROPOLIS, SOUTHWEST NIGERIA

 Popoola, O.J. and Omiyeniyi, O.S. (2024) A Probabilistic Health Risk Assessment of Heavy Metals in Dusts Within Selected Schools in Owo Metropolis, Southwest Nigeria. Journal of Healthcare in Developing Countries, 4(2): 70-86.  DOI: http://doi.org/10.26480/jhcdc.02.2024.70.86 This study was carried out to assess the extent of health risk associated with heavy metals in dust settled in selected schools in Owo City, southwestern Nigeria. Thirty-two dust samples were collected in eight selected schools in the town following internationally accepted techniques of sample collection. All samples were processed and analysed for As, Cu, Fe, Ni, Pb, and Zn using an atomic absorption spectrophotometer (AAS). Results showed that the average amount of arsenic As (mg/kg) in classroom ground, entrance, window, and playground samples were 1.32, 1.35, 0.59, and 0.75, respectively, while the concentration of Zn (mg/kg) in the samples was 82.12, 125.71, 71.42, and 71.61, respectively. Polluti...
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Integrated Assessment of Heavy Metal Contamination in Urban Road Dust: Implications for Human Health and Ecosystem Sustainability in Abeokuta, Nigeria

 Laniyan, T.A. and O.J. Popoola (2024)   Integrated Assessment  of Heavy Metal Contamination in Urban Road Dust: Implications for Human Health  and Ecosystem Sustainability in Abeokuta, Nigeria, Environmental Forensics, DOI: 10.1080/15275922.2024.2366786 This research aims to comprehensively investigate the heavy metal contamination in road  dust within the rapidly expanding urban area of Abeokuta, Nigeria. Focusing on potentially  hazardous metals such as Cr, Co, As, Ni, Cu, Zn, Cd, Fe, and Pb, the study employs multivariate  statistical techniques to identify sources, assess ecological and health hazards, and determine  metal concentrations. Through the analysis of twenty road dust samples, variations in  metal concentrations are observed, leading to the application of the geo-accumulation index, contamination factor, contamination degree, and pollution load index for contamination  assessment. The results reveal varying degrees of con...
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