Browsing by Author "Wakili Tope Aborisade"

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    Assessment of Physicochemical, Hygiene Performance and Bacteriological Quality of Stored Water in Selected Hostels in Malete, Kwara State, Nigeria
    (Faculty of Science, Gombe State University (GSU), Nigeria., 2025) Fausat Abimbola Jimoh; Abdullahi Taiwo Ajao; Wakili Tope Aborisade; Zainab Biola Abdulsalam; Olanrewaju Sariyat Olayinka
    ABSTRACT Water quality assessment is crucial in ensuring the safety and health of individuals, especially in residential areas like student hostels. This study assessed the physicochemical parameters, hygiene performance, and bacteriological quality of stored water in hostels in Malete, Nigeria. Twenty different water samples were collected and analyzed for key physicochemical properties and hygiene practices related to water storage and handling. Membrane filtration technique was employed for the bacteriological estimation and identification of the isolates were carried out using standard methods. Hygiene performance indices ranged from 40 - 80 % of the stored water samples. The findings revealed varying levels of physicochemical properties; Temperature oscillated from (26.0 - 28.4 °C), TDS (48.0 – 690.0 mg/L), pH (5.44 -7.61), EC in μS/cm (96.0 – 689.0), salinity (0.0 -0.01%) and resistivity (1.170 – 4.910 MΩ/cm). Total Bacterial Count ranged from 80.0 ±0.5.77 - 200±20.0 CFU/100ml, Total Coliform Count (0.0 - 100±10.00 CFU/100ml), Total Faecal Coliform Count (0.0 – 10.0±0.0 CFU/100ml), Total Salmonella- Shigella (0.0 - 100±26.45 CFU/100ml) and Total Pseudomonad Count (0.0 - 100±20.00 CFU/100ml). Poor hygiene practices, such as inadequate container cleaning and direct hand contact, contributed to bacterial contamination. The presence of coliforms in almost all the samples indicated potential health risks. This study highlights the need for improved water management practices and regular monitoring to ensure safe drinking water for hostel residents in Malete, Kwara State. Implementing proper hygiene education and water treatment methods is recommended.
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    BACTERIOLOGICAL EVALUATION AND PHYSICOCHEMICAL COMPLIANCE OF PACKAGED WATER SOLD IN ILORIN, NIGERIA
    (FUDMA Journal of Sciences (FJS), 2025) Fausat Abimbola Jimoh; Abdullahi Taiwo Ajao; Wakili Tope Aborisade; Zainab Biola Abdulsalam; Matthew Olatunji Kolawole
    This study evaluated the quality of sachet and bottled water sold in Ilorin, Nigeria. Water samples were procured from selling points, and their physicochemical and bacteriological quality was assessed using standard methods. The results showed that the respective physicochemical parameters for sachet and bottle waters: temperature (26.6 °C and 23.9 °C), electrical conductivity (142.0 μs/cm and 111.0 μs/cm), total dissolved solids (68.5 mg/L and 58.0 mg/L), pH (7.5 and 7.3), and salinity (0.05 and BDL) of both sachet and bottled water samples respectively were within the permissible range recommended by the World Health Organization (WHO). Bacteriological analysis revealed that total heterotrophic bacterial counts (52.5*Z ± 4.7 and 35.0Z ± 0.9) for sachet and bottled water samples were within WHO limits; however, total coliform counts (51.50*Z ± 2.6 and 33.5Z ± 1.5) exceeded the acceptable range of 0 CFU/mL. Seven bacterial isolates identified were Pseudomonas aeruginosa, Klebsiella spp., Proteus spp., Enterobacter spp., Salmonella spp., Shigella spp. and Bacillus subtilis. The number of bacterial isolates in bottled water was higher, with Klebsiella spp. being the most prevalent. The findings suggest varying degrees of microbiological contamination, indicating that some packaged water samples are not of the highest quality. These results highlight the need for stricter monitoring and quality control measures to ensure the safety of packaged water
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    ECOTOXICOLOGICAL STUDIES OF PESTICIDE FORMULATIONS ON SOIL SENTINEL'S MICROFLORA (NITROSOMONAS AND NITROBACTER SPP.) AND MESOFAUNA (EPHYRIODRILUS SPP.)
    (GLOBAL ENVIRONMENT & SOCIAL ASSOCIATION, 2023) Ernest Ikenna Atuanya; Wakili Tope Aborisade
    The ecotoxicological effect of pesticide formulations at the concentration range of half of the normal field rate (0.5FR), normal field rate (FR), 2FR, 4FR and 8FR respectively on representative microflora and mesofauna soil sentinels was investigated. Inhibition effects over the 1, 2, 3 and 4 hr period of exposure in Winogradsky media were observed for microflora. Avoidance responses were observed for mesofauna in pesticide spiked soils after a 48 hr exposure period. Generally, there was a corresponding decrease in mesofauna population with increase in pesticide concentrations. The LC50 values after 4 hrs of exposure indicated that endosulfan (4.37 µg/l) and paraquat (10.02 µg/l) formulations had more toxic effect on Nitrosomonas sp. Cypermethrin and glyphosate showed more toxic effects on Nitrobacter sp. with LC50 values of 10.21 µg/l and 10.50 µg/l respectively. Ephyriodrilus spp. were observed to avoid all the pesticide treated soils at different concentrations as compared to pesticide free soils with less than 20 % observed in the soil spiked with 4FR and 8FR for endosulfan and cypermethrin and 8FR for glyphosate and paraquat. Pesticide formulation at the concentration above the recommended rate could adversely affect the soil organisms and affect their important ecological functions.