Browsing by Author "Agho, I.O."

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    AN IN-DEPTH STUDY OF HEAVY METALS IN SOILS AROUND SELECTED WASTE DUMPSITES IN PARTS OF SOUTHERN NIGERIA USING HEAVY METAL INDICES AND MULTIVARIATE STATISTICAL ANALYSIS
    (African Journals OnLine, 2025) Osisanya, W.O.; Agbalagba, O.E.; Agho, I.O.; Eyankware, M.O.; Iduseri, O.M
    A detailed study was conducted around waste dumpsite in the study area, to evaluate the levels of heavy metals in the soil. Soil samples were collected at twenty (20) different locations within waste dumpsites for the study. The heavy metals (zinc (Zn), chromium (Cr), copper (Cu), lead (Pb), cadmium (Cd), mercury (Hg), nickel (Ni), arsenic (As), and iron (Fe)) were analyzed using atomic absorption spectrometry (AAS). The resulting data was analysed using principal component analysis (PCA), Pearson correlation, and the heavy metal indices: Potential Ecological Risk (ERI), Geoaccumulation Index (Igeo), Contamination Factor (CF), and Nemerow Pollution Index (PNI). Thesoil contain the heavy metals: zinc (Zn), chromium (Cr), copper Cu, Pb, Cd, Hg, Ni, As, and Fe. Their concentrations, inorder 9.28 to 60.1 mg/kg for Zn, 4.4 to 14.39 mg/kg for Cr, 5.4 to 21.39 mg/kg for Cu, 6.07 to 17.5 mg/kg for Pb, 0.04 to 1.5 mg/kg for Cd, 0.0001 to 0.003 mg/kg for Hg, 7.28 to 20.38 mg/kg for Ni, 0.0001 to 0.003 mg/kg for As, and 1020 to 16540 mg/kg for Fe,The Igeo data indicated that all samples fell within the range of 0 to 2, implying that the sediment quality was largely unpolluted. The PNI yielded a diverse array of results within the study area, PC1 has a loading percentage of 77.8%, PC2 has a loading percentage of 44.4%, PC3 has a loading percentage of 33.3%, and PC4 has a loading percentage of 11.1%. This loading signifies the element's importance in the contribution of pollution within elements and to the soil. Further deductions from soil samples results that was compared to World Health Organization (WHO), and Department of Petroleum Resource (DPR), permissible limit suggested that all samples were below the permissible limit except for Cd, that its concentration was above WHO limit at some locations namely; DO/ 02, 03, 04, 05, 06, 08, 09, 10, 12, 13,and 18, this could be attributed to anthropogenic activities within the study area. These findings can serve as a valuable resource for those responsible for managing dumpsites, aiding in the prevention of heavy metal soil contamination.
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    Integration of Heavy Metal Indexes and Health Risk Assessment in Groundwater Studies in Urban Area of Port Harcourt, Niger Delta Region of Nigeria
    (Anchor University, 2024) Osisanya, W.O.; Akpeji, B. H.; Agho, I.O.; Saleh, S.A.; Oyanameh, O. E.
    The Niger Delta region of Nigeria is faced with a serious environmental hazard from heavy metal (HM) pollution in groundwater, mostly as a result of local oil corporations' operations within the communities and its suburbs.. Physical characteristics such as pH, and Ec, heavy metals (Fe, Pb, Mn, As, Ni, Co, Cu, Zn, and Cr) were measured in 17 groundwater samples that were collected. The influence of heavy metals on groundwater chemistry is revealed by the principal component analysis (PCA) analysis results. According to the child population's dermal techniques, findings showed that 6 % of samples with low risk, 41 % with medium risk, and 51 % with high risk. Yet, 29 % of adults are at medium risk and 71 % of adults pose insignificant to low risk. According to the evaluated Carcinogenic Risk (CR) scores of the groundwater samples that were considered in this study, there was a very high propensity to effect the development of cancer in consumers, including adults and children. The research area's Heacy Metal Pollution Index ( HPI) ranges from 7.15 to 63.08with an average value of 27.16 according to the HPI data. This suggests that there is generally safe water because the HPI throughout the research area is below 100. Fe was found to be positive in 12 (70.59%) samples (FET/01,02,03,07,08,10,11,12,14,15,16, and 17) and zero in 5 (29.41%) samples (FET/04/05/06/09,13) based on the results of the Quantification of Contamination (QoC).For Ni, 58.82% of samples (FET/01, 02, 03, 08, 09, 10, 11, 12, 14, and 16) had negative QoC scores, while seven (41.18%) samples (FET/04, 05, 06, 07, 13, 15, and 17) had positive QoC scores. These findings underscore the urgent need for continued groundwater monitoring and implementation of effective purification technologies before consumption to mitigate health risks associated with heavy metal contamination in the Niger Delta region.. The present investigation concluded that this location's groundwater needed to have its HM level measured
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    Studies of heavy metal in soil at Omoku, River State, Nigeria, using Pollution Indices and Potential Ecological Risk
    (Anchor University, 2024) Osisanya, W.O.; Agho, I.O.; Ovri, A. A.; Eyankware, M.O.
    This study used Atomic Absorption Spectrometry (AAS) to measure the levels of heavy metals (HM) in soil affected by oil spills in a few locations in River State, Southern Nigeria, in order to investigate the ecological dangers and pollution status of HM. This study examined the heavy metals iron (Fe), arsenic (As), lead (Pb), mercury (Hg), barium (Ba), vanadium (V), nickel (Ni), copper (Cu), zinc (Zn), and chromium (Cr). The study analyzed the outcomes of a heavy metal risk assessment index, which encompassed the level of contamination, the Geo-accumulation index (Igeo), and the prospective ecological risk assessment (ERI). Findings from the showed that Nemerow Pollution (PNI), Potential Ecological Risk Index (PERI), Degree of Contamination (Cdeg) ranges from 12.64 to 28.26, 2.40 to 518.48, and 17.63 to32.44 respectively. Results obtained from the study are considered to be fairly above the international standard at some locations. Deduction from the study suggested that human activities such farming, oil spillage, solid waste disposal, and automobile workshop were identified to be the primary contributors of heavy metal pollution in the soil (Cdeg) and PNI. As seen by the uncontaminated soil samples and the negligible effect of local human activity on the ERI, the Igeo results run counter to the ERI results. The Cdeg observation indicated that the soil was not very polluted.