Investigation on the Quality of Prolonged Storage of Packaged Water Commonly Produced in North Central, Nigeria Fatai OKEOLA, Taofeeqat ABU, Aminat MOHAMMED, Muyiwa OROSUN, Abdullahi BABA, et al. Journal of the Turkish Chemical Society Section A Chemistry, 2023 This study investigated the effects of prolonged storage conditions on the physicochemical parameter, toxic metals, microbial loads, and health risks assessment of randomly selected three brands of sachet and bottled water in North Central, Nigeria. One hundred eighty samples of water brands (sachet and bottled) were collected from 10 different factories and were grouped into three. They were analyzed immediately (initial), being exposed to mild sunlight (stored with a container) and exposed to intense sunlight (stored without a container) conditions for six weeks. The results of the physicochemical parameters (sachet and bottle) were within the limits set by the World Health Organization (WHO) and the Standard Organization of Nigeria (SON). While the results of heavy metals analysis for both sachet and bottled water recorded 0.15 - 0.51 mg/L (0.10 mg/L , 0.05 mg/L), 0.13 - 0.38 mg/L (0.015 mg/L, 0.01 mg/L) and 0.55 - 1.11 mg/L (0.03 mg/L, 0.3 mg/L) for Chromium (Cr), Lead (Pb) and Iron (Fe) respectively, as compared to the permissible limits (values in the bracket for each heavy metals) set by WHO and SON. The microbial analysis results ranged between 6.58 - 124.51 Cfu/100 mL, 0.52 - 37.56 Cfu/100 mL, 0.07 - 5.00 Cfu/100 mL, 0 - 2.07 Cfu/100 mL for Total Bacteria Count (TBC), Total Coliform Count (TCC), Faecal Coliform Count (FCC) and Total Fungal Count (TFC) respectively, which showed no effective quality control system. Incremental lifetime cancer risk (ILCR) assessment revealed a carcinogenic health risk to the populace drinking this water. The study concludes that water stored under sunlight for a long period is not good for human consumption and therefore adequate monitoring by the appropriate agencies is emphasized.
RISK ASSESSMENT OF HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS IN GROUND WATER SAMPLES AROUND THE VICINITY OF AN ASPHALT PLANT IN NORTH CENTRAL, NIGERIA A.A. Mohammed, M.M. Orosun, F.O. Okeola, M.A. Raji, G.O. Tesi, et al. Bulletin of the Chemical Society of Ethiopia, 2023 In this study, the concentration and risk of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in 9 composite samples around the vicinity of an Asphalt plant in North Central, Nigeria, was evaluated. Aqua-regia wet digestion was used for heavy metals extraction in the water samples while atomic absorption spectrometry was used quantification. For PAHs, liquid-liquid extraction was used for extraction while gas chromatography-mass spectrometry was used for quantification of PAHs in the extracts. The risk assessment was estimated using the hazard index (HI) and incremental lifetime cancer risk (ILCR) in all the samples studied. The results showed that Cd and Cr were present in concentrations higher than their permissible limits in water set by World Health Organization, while Pb was not detected. Total concentration of 14 PAHs ranged between 6.47–390 mg L-1 and were within the WHO permissible limits. High molecular weight PAHs were dominant (71.54%) relative to low molecular weight PAHs (28.46%). The risk assessment results revealed that 100% ILCRtotal values recorded for heavy metals were higher than the recommended limit. While 37.5% of ILCRtotal values recorded for PAHs were higher than the recommended values, implying that residents are exposed to health risks from both metals and PAHs.
 KEY WORDS: Asphalt plant, Heavy metals, Polycyclic aromatic hydrocarbons,Water, Risk assessment
 Bull. Chem. Soc. Ethiop. 2023, 37(6), 1337-1349. DOI: https://dx.doi.org/10.4314/bcse.v37i6.4
Source analysis of heavy metals and polycyclic aromatic hydrocarbons from a popular dumpsite, lagos state, nigeria Aminat MOHAMMED, Pascal INİAGHE, Taofeeqat ABU, Majeed BELLO, Mariam ABDULKADİR Journal of the Turkish Chemical Society Section A Chemistry, 2020 In this study, landfill leachates and plants from Olusosun landfill in Ojota area of Lagos State, Nigeria were investigated. Physicochemical parameters, concentrations of heavy metals (HMs – Pb, Cd, Cr, Ni, Mn and Zn) and polycyclic aromatic hydrocarbons (PAHs) were determined in leachates while HMs and PAHs were determined in plants. Perchloric and sulfuric acids mixtures were used for digesting both the leachates and plant samples prior to quantification by atomic absorption spectrometry. Cold extraction was used for extracting PAHs and quantified using gas chromatography-mass spectrometry. The range of results on HMs analysis were: leachates (mg/L) - Pb: 0.60 - 1.10, Cd: 0.04 - 0.05, Cr: 0.30 - 0.40, Ni: 0.13 - 0.19, Mn: 0.53 - 0.74 and Zn: 2.24 - 3.72; plants (mg/kg) – Pb: 1.0 – 6.0, Cd: 0.3 – 0.5, Cr: 0.0 – 4.0, Ni: 0.2 – 1.6, Mn: 10.1 – 41.2 and Zn: 0.0 – 13.2 respectively. For PAHs, the concentrations (mg/L) ranged from 0.10 - 0.24 and 0.09 - 0.31 mg/kg for leachates and plants respectively. Pearson correlation and principal component analysis identified the main sources of pollution on Olusosun landfill as anthropogenic. Proper management of the landfill is advised to prevent contamination of groundwater and surface waters.
Artificial Intelligence Adoption and Digital Transformation in Modern Business Administrations in Nigeria A Samuel, IT Olorunfemi, A Mohammed Journal of Economics and Finance 9 (1) , 2026 2026
Thermodynamic and kinetics studies of Methylene Blue Adsorption onto Synthesised TiO2 Cellulose Acetate Nanocomposite in Aqueous Medium FO OKEOLA, AA MOHAMMED, TO ABU, J WASIU, MT YUSUF 2026
De Campos, JS Inter-Relationship Analysis Between Morpho-Structural and Physiological Traits of Nigerian White Fulani Cattle Breed Raised Under Semi-Intensive System of Management IO Opowoye, AA Mohammed, GO Onasanya, AT Yusuff, BK Olanrewaju, ... Nigerian Journal of Animal Science and Technology (NJAST) 8 (3), 109-116 , 2025 2025
Bioremediation of anthraquinone dye using bimetallic Ni-Zn nanohybrid synthesized from Ficus exasperate leaf extract AA Mohammed, A Suleiman Ibrahim, FO Okeola, IK Ayinla, BO Anthony, ... Chemical Engineering Communications 211 (8), 1288-1299 , 2024 2024
Green synthesized Pd-Ni nanohybrids for controlled degradation of low-density polyethylene films AA Mohammed, OM Olabemiwo, AA Olajire Chemical Engineering Communications 210 (11), 2043-2056 , 2023 2023 Citations: 2
RISK ASSESSMENT OF HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS IN GROUND WATER SAMPLES AROUND THE VICINITY OF AN ASPHALT PLANT IN NORTH CENTRAL, NIGERIA. AA Mohammed, MM Orosun, FO Okeola, MA Raji, GO Tesi, OJ Yusuph Bulletin of the Chemical Society of Ethiopia 37 (6) , 2023 2023 Citations: 3
Investigation on the Quality of Prolonged Storage of Packaged Water Commonly Produced in North Central, Nigeria F Okeola, T Abu, A Mohammed, M Orosun, A Baba, MB Adeboje Journal of the Turkish Chemical Society Section A: Chemistry 10 (2), 303-314 , 2023 2023 Citations: 9
Investigation on the storage stability of packaged water commonly produced in Ilorin metropolis, Kwara state, Nigeria F Okeola, T Abu, AA MOHAMMED, M Orosun, M Obinaike, A Mariam 2021 Citations: 6
Bio-directed synthesis of gold nanoparticles using Ananas comosus aqueous leaf extract and their photocatalytic activity for LDPE degradation AA Olajire, AA Mohammed Advanced Powder Technology 32 (2), 600-610 , 2021 2021 Citations: 45
Adsorption of Congo red dye from aqueous solution by carbonised cowpea ( Vigna unguiculata ) husk: kinetics, equilibrium and thermodynamics studies. B Idoko, AA Mohammed 2020 Citations: 1
Corrigendum to “Green synthesis of palladium nanoparticles using Ananas comosus leaf extract for solid-phase photocatalytic degradation of low density polyethylene film title … AA Olajire, AA Mohammed Journal of Environmental Chemical Engineering 8 (3), 103320 , 2020 2020
Green synthesis of bimetallic PdcoreAushell nanoparticles for enhanced solid-phase photodegradation of low-density polyethylene film AA Olajire, AA Mohammed Journal of Molecular Structure 1206, 127724 , 2020 2020 Citations: 22
Source Analysis of Heavy metals and Polycyclic Aromatic Hydrocarbons from a popular dumpsite, Lagos State, Nigeria AA MOHAMMED, PO INİAGHE, TABU OMOTAYO, MO BELLO, ... Journal of the Turkish Chemical Society Section A: Chemistry 7 (2), 489-504 , 2020 2020 Citations: 13
Green synthesis of nickel oxide nanoparticles and studies of their photocatalytic activity in degradation of polyethylene films AA Olajire, AA Mohammed Advanced Powder Technology 31 (1), 211-218 , 2020 2020 Citations: 146
Green synthesis of palladium nanoparticles using Ananas comosus leaf extract for solid-phase photocatalytic degradation of low density polyethylene film AA Olajire, AA Mohammed Journal of Environmental Chemical Engineering 7 (4), 103270 , 2019 2019 Citations: 52
Quantitative Assessment of Potassium from k-Feldspar ore by Roast-leaching Process IK Ayinla, AA Baba, MA Raji, CD Uzondu, AA Mohammed, SG GIRIGISU Journal of Chemical Society of Nigeria 43 (4) , 2018 2018 Citations: 4
Nutrient and Anti-Nutrient Composition of Jatropha (Jatropha curcas) Fruit Pericarp and Seed Coat, Cocoa (Theobroma cacao) and Kola-nut (Cola nitida) Pods FO Okeola, OM Ameen, TO Abu, AA Mohammed, AG Abdulmummeen Society for the Conservation of Phytofuels and Sciences , 2018 2018
Removal of bisphenol-A from aqueous solution using rice husk nanosilica: adsorption kinetics, equilibrium and thermodynamic studies BO Orimolade, FA Adekola, AA Mohammed, AO Idris, OD Saliu, T Yusuf J. Appl. Chem. Res 12, 8-21 , 2018 2018 Citations: 15
Biosorption of Atrazine from Aqueous Solution using an Activated Carbon Prepared from Thevetia Peruviana Seed OMA F.O. Okeolaa , F.O. Nwosu, O.M. Ameen, T.O. Abu, A.A. Mohammed, A. Ibrahim Jordan Journal of Chemistry 12 (4), 219-232 , 2017 2017 Citations: 4
Removal of Lead and Cadmium ions from Aqueos Solution by Adsorption onto Jatrophas curcas Activated Carbon FO Okeola, EO Odebunmi, FO Nwosu, TO Abu, AA Mohammed, ... Nig. J. Pure & Appl. Sci. 30 (1), 2955 - 2964 , 2017 2017 Citations: 5
MOST CITED SCHOLAR PUBLICATIONS
Green synthesis of nickel oxide nanoparticles and studies of their photocatalytic activity in degradation of polyethylene films AA Olajire, AA Mohammed Advanced Powder Technology 31 (1), 211-218 , 2020 2020 Citations: 146
Green synthesis of palladium nanoparticles using Ananas comosus leaf extract for solid-phase photocatalytic degradation of low density polyethylene film AA Olajire, AA Mohammed Journal of Environmental Chemical Engineering 7 (4), 103270 , 2019 2019 Citations: 52
Bio-directed synthesis of gold nanoparticles using Ananas comosus aqueous leaf extract and their photocatalytic activity for LDPE degradation AA Olajire, AA Mohammed Advanced Powder Technology 32 (2), 600-610 , 2021 2021 Citations: 45
Evaluation of ginger (Zingiber officinale) as a feed additive in broiler diets AA Mohammed, M Yusuf Livestock Research for Rural Development 23 (9), 1-5 , 2011 2011 Citations: 39
Biosorption of Fe (II) and Cd (II) ions from aqueous solution using a low cost Adsorbent from Orange Peels GB Adebayo, AA Mohammed, SO Sokoya J. Appl. Sci. Environ. Manage. 20 (3), 702 - 714 , 2016 2016 Citations: 30
Green synthesis of bimetallic PdcoreAushell nanoparticles for enhanced solid-phase photodegradation of low-density polyethylene film AA Olajire, AA Mohammed Journal of Molecular Structure 1206, 127724 , 2020 2020 Citations: 22
Removal of bisphenol-A from aqueous solution using rice husk nanosilica: adsorption kinetics, equilibrium and thermodynamic studies BO Orimolade, FA Adekola, AA Mohammed, AO Idris, OD Saliu, T Yusuf J. Appl. Chem. Res 12, 8-21 , 2018 2018 Citations: 15
Source Analysis of Heavy metals and Polycyclic Aromatic Hydrocarbons from a popular dumpsite, Lagos State, Nigeria AA MOHAMMED, PO INİAGHE, TABU OMOTAYO, MO BELLO, ... Journal of the Turkish Chemical Society Section A: Chemistry 7 (2), 489-504 , 2020 2020 Citations: 13
Investigation on the Quality of Prolonged Storage of Packaged Water Commonly Produced in North Central, Nigeria F Okeola, T Abu, A Mohammed, M Orosun, A Baba, MB Adeboje Journal of the Turkish Chemical Society Section A: Chemistry 10 (2), 303-314 , 2023 2023 Citations: 9
Catalytic crosslinking of a regenerated hydrophobic benzylated cellulose and nano TiO2 composite for enhanced oil absorbency OD Saliu, GA Olatunji, A Yakubu, MT Arowona, AA Mohammed e-Polymers , 2017 2017 Citations: 9
Investigation on the storage stability of packaged water commonly produced in Ilorin metropolis, Kwara state, Nigeria F Okeola, T Abu, AA MOHAMMED, M Orosun, M Obinaike, A Mariam 2021 Citations: 6
Assessment of Heavy Metal Contamination in Vended Road-Side Snacks using Ilorin as a Case Study A Mohammed, AA, Iniaghe, PO, Okoro, HK, Saliu, OD, TP Al-Hikmah Journal of Pure & Applied Sciences 3, 51 - 56 , 2016 2016 Citations: 6
Removal of Lead and Cadmium ions from Aqueos Solution by Adsorption onto Jatrophas curcas Activated Carbon FO Okeola, EO Odebunmi, FO Nwosu, TO Abu, AA Mohammed, ... Nig. J. Pure & Appl. Sci. 30 (1), 2955 - 2964 , 2017 2017 Citations: 5
Improvement of millet (Pennisetum glaucum) straw as animal feed using physical and chemical treatment M Maha, F Babo, A Mohammed International Journal of Innovative Science, Engineering & Technology 3 (5 … , 2016 2016 Citations: 5
Quantitative Assessment of Potassium from k-Feldspar ore by Roast-leaching Process IK Ayinla, AA Baba, MA Raji, CD Uzondu, AA Mohammed, SG GIRIGISU Journal of Chemical Society of Nigeria 43 (4) , 2018 2018 Citations: 4
Biosorption of Atrazine from Aqueous Solution using an Activated Carbon Prepared from Thevetia Peruviana Seed OMA F.O. Okeolaa , F.O. Nwosu, O.M. Ameen, T.O. Abu, A.A. Mohammed, A. Ibrahim Jordan Journal of Chemistry 12 (4), 219-232 , 2017 2017 Citations: 4
RISK ASSESSMENT OF HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS IN GROUND WATER SAMPLES AROUND THE VICINITY OF AN ASPHALT PLANT IN NORTH CENTRAL, NIGERIA. AA Mohammed, MM Orosun, FO Okeola, MA Raji, GO Tesi, OJ Yusuph Bulletin of the Chemical Society of Ethiopia 37 (6) , 2023 2023 Citations: 3
Performance of broiler chickens fed whole pearl millet (Pennisetum glaucum) based diets, supplemented with Detoxizyme® and phytogenics AA Mohammed, M Habiba, I Mukhtar Bone 38, 33.0 , 2014 2014 Citations: 3
Green synthesized Pd-Ni nanohybrids for controlled degradation of low-density polyethylene films AA Mohammed, OM Olabemiwo, AA Olajire Chemical Engineering Communications 210 (11), 2043-2056 , 2023 2023 Citations: 2
Assessment of Heavy Metal Pollution on Roadside Dusts from Selected Locations in Ilorin, Nigeria Using AAS Techniques HK Okoro, OT Ogunsemoyin, AA Mohammed Adamawa State University Journal of Scientific Research 4 (1), 1 - 12 , 2016 2016 Citations: 2