Browsing by Author "Opeoluwa O. Oyaniran"

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    Corrigendum to “Potentially Harmful Element toxicity in Geophagic clays consumed in parts of southeastern Nigeria”. [Journal of Trace Elements and Minerals 4C (2023) 100050]
    (Elsevier, 2024-03-12) Jerry O. Olajide-Kayode; Tesleem O. Kolawole; Opeoluwa O. Oyaniran; Shakirat O. Mustapha; Akinade S. Olatunji
    An assessment of geophagic clays consumed by adults and children in Calabar and Okon-Eket areas of southeast- ern Nigeria was done in order to evaluate possible toxicity of Potentially Harmful Elements (PHEs)- Cd, As, Pb, Cu and Zn (CALCZ). Thirteen clay samples obtained from open markets and clay mines were air-dried, pulver- ized and analysed for their elemental constituents using Inductively Coupled Plasma Mass Spectrometry (ICPMS). Ecological and health risk assessments of the clays were conducted using Index of Geoaccumulation (I geo ), Con- tamination Factor (CF) and Degree (C Deg ), Pollution Index (PI), Ecological Risk Factor (Er) and Index (RI), Hazard Index (HI) and Cancer Risk Index (CRI). The clays had PHE concentrations (ppm) in the order: Zn (13.0–148.0) > Pb (16.7–55.6) > Cu (5.7–23.0) > As (BDL-15.0) > Cd (BDL-0.2). I geo values for Cd, As, Cu and Zn in the clays were < 0, while Pb had a value of (-1) to 1. The clays from Calabar and Okon-Eket had Pb CF values of 1.8 and 1.7, and PI values of 1.4 and 1.3, respectively. Results of I geo , CF and PI calculations revealed moderate Pb contami- nation in the clays. Low HQ and HI of the PHEs indicates that they pose no immediate risk of non-carcinogenic nor carcinogenic effects to the geophagic individuals. However, the moderate Pb contamination in the clays is a source of health concern, especially for geophagic children.
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    Potentially Harmful Element toxicity in Geophagic clays consumed in parts of southeastern Nigeria
    (Elsevier, 2023-01-24) Jerry O. Olajide-Kayode; Tesleem O. Kolawole; Opeoluwa O. Oyaniran; Shakirat O. Mustapha; Akinade S. Olatunji
    An assessment of geophagic clays consumed by adults and children in Calabar and Okon-Eket areas of southeast- ern Nigeria was done in order to evaluate possible toxicity of Potentially Harmful Elements (PHEs)- Cd, As, Pb, Cu and Zn (CALCZ). Thirteen clay samples obtained from open markets and clay mines were air-dried, pulver- ized and analysed for their elemental constituents using Inductively Coupled Plasma Mass Spectrometry (ICPMS). Ecological and health risk assessments of the clays were conducted using Index of Geoaccumulation (I geo ), Con- tamination Factor (CF) and Degree (C Deg ), Pollution Index (PI), Ecological Risk Factor (Er) and Index (RI), Hazard Index (HI) and Cancer Risk Index (CRI). The clays had PHE concentrations (ppm) in the order: Zn (13.0–148.0) > Pb (16.7–55.6) > Cu (5.7–23.0) > As (BDL-15.0) > Cd (BDL-0.2). I geo values for Cd, As, Cu and Zn in the clays were < 0, while Pb had a value of (-1) to 1. The clays from Calabar and Okon-Eket had Pb CF values of 1.8 and 1.7, and PI values of 1.4 and 1.3, respectively. Results of I geo , CF and PI calculations revealed moderate Pb contami- nation in the clays. Low HQ and HI of the PHEs indicates that they pose no immediate risk of non-carcinogenic nor carcinogenic effects to the geophagic individuals. However, the moderate Pb contamination in the clays is a source of health concern, especially for geophagic children.