Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

Okeke, David Okechukwu; Ifemeje, Jonathan C.; Eze, Victor Chukwuemeka

doi:10.25082/he.2022.01.003

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The mean values of Co for the upstream samples for both seasons ranged from 0.03 -0.04 mg/L, while the downstream sample values ranged from 0.023 -0.03 mg/L. These values were lower than the results obtained [53,54].…”

Section: Potentially Toxic Elements Analysescontrasting

confidence: 63%

Potentially toxic element contamination and risk assessment of borehole water within a landfill in the Nnewi metropolis

et al. 2023

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Borehole water has been used as a vital source of water for many communities. The pollution of these boreholes by potentially toxic elements using unlined solid waste dumpsites has posed a significant risk to the populace living around the dumpsite. This study investigates the environmental impact of potentially toxic elements on borehole water within the vicinity of an unlined dumpsite in the Nnewi metropolis. The upstream and downstream samples (16 each) were collected in wet and dry seasons. The potentially toxic elements analysis wasperformed using the methods of the American Public Health Association (APHA) under the required conditions. The quality of the boreholes was assessed using the World Health Organisation (WHO) acceptable limits for drinking water. The risk assessment was estimated for carcinogenic and non-carcinogenic risks using ingestion and dermal routes. The results show that the borehole water wascontaminated with potentially toxic elements through leachate infiltration, which exceeded the WHO permissible limits for drinking water at both locations and seasons. The upstream borehole samples were more contaminated than the downstream samples for both seasons, due to their proximity to the pollution source. The hazard indices of the ingestion and dermal routes showed that the borehole water poses serious cancer and non-cancer health risks for both locations. The results revealed that children are more susceptible to cancer and non-carcinogenic health threats than adults for both locations and seasons. The pollution indices of borehole water for wet season (9.028 and 5.728) and dry season (7.107 and 5.328) for upstream and downstream samples respectively, were polluted and the pollution was higher in the wet season. The borehole water samples were unsuitable for drinking water and should be treated before use.

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Section: Potentially Toxic Elements Analysescontrasting

confidence: 63%

Potentially toxic element contamination and risk assessment of borehole water within a landfill in the Nnewi metropolis

et al. 2023

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Assessment of vanadium pollution and ecological risk in some selected waste dumpsites in Southeastern Nigeria

Eze¹,

Okeke²,

Nwabudike³

et al. 2022

Health Environ

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Waste disposal on dumpsites has resulted in significant vanadium pollution of the soil and ecosystem. This study assessed the pollution status and potential ecological risk of vanadium in some selected waste dumpsites in southeastern Nigeria. In this study, the soil samples were taken from the active waste dumpsites using a stainless-steel soil auger at a depth of 0 - 20 cm. Five sub-samples were taken from each sample location. A control sample was taken from an area devoid of industrial activities and waste dumps. Soil samples were air-dried at room temperature, pulverized with an agate mortar and pestle, and stored using appropriately labeled polythene bags prior to analysis. Vanadium analysis was conducted using an FS240AA atomic absorption spectrophotometer, and the data generated was analysed using IBM SPSS version 20.0 and Ms-Excel 2007. The mean vanadium concentrations in the studied waste dumpsites were found to be in the following order: Okpuno-Egbu dumpsite > Nekede dumpsite > Enyimba dumpsite > Rice-mill dumpsite. Acceptable potential ecological risk indices were observed in the Rice-mill, Enyimba, and Okpuno-Egbu dumpsites, while Nekede dumpsite recorded a high potential ecological risk. Furthermore, the pollution load index revealed that all the studied dumpsites were heavily polluted. Statistical analysis revealed no significant variations in vanadium concentrations in the studied dumpsites (p>0.05). Additionally, there was a strong and positive correlation between the dumpsites of Enyimba/Nnewi (r = 0.634), Nekede/Nnewi (r = 0.615), and Nekede/Rice-mill (r = 0.842). This indicated that the metal found in the dumpsites is of the same origin.

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Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

Cited by 2 publications

References 17 publications

Potentially toxic element contamination and risk assessment of borehole water within a landfill in the Nnewi metropolis

Potentially toxic element contamination and risk assessment of borehole water within a landfill in the Nnewi metropolis

Assessment of vanadium pollution and ecological risk in some selected waste dumpsites in Southeastern Nigeria

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