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Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication

This work assessed levels of heavy metals exposure from silver coatings of mobile phones recharge cards of three major companies (designated as A, B and C) with price denominations [Image: see text] 100, [Image: see text] 200 and [Image: see text] 400 from companies A, B and C respectively, which we...

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Autores principales: Adekunle, Abolanle S., Oyekunle, John A.O., Baruwa, Suliat O., Ogunfowokan, Aderemi O., Ebenso, Eno E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5598170/
https://www.ncbi.nlm.nih.gov/pubmed/28962242
http://dx.doi.org/10.1016/j.toxrep.2014.05.008
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author Adekunle, Abolanle S.
Oyekunle, John A.O.
Baruwa, Suliat O.
Ogunfowokan, Aderemi O.
Ebenso, Eno E.
author_facet Adekunle, Abolanle S.
Oyekunle, John A.O.
Baruwa, Suliat O.
Ogunfowokan, Aderemi O.
Ebenso, Eno E.
author_sort Adekunle, Abolanle S.
collection PubMed
description This work assessed levels of heavy metals exposure from silver coatings of mobile phones recharge cards of three major companies (designated as A, B and C) with price denominations [Image: see text] 100, [Image: see text] 200 and [Image: see text] 400 from companies A, B and C respectively, which were carefully scratched using a plastic scraper into a glass tube. The coatings were acid digested for total metal concentration, while speciation experiment for Mn, Cu, Cd and Pb was carried out. Total metals and speciation analysis were done using AAS and XRF techniques. The total metal concentration from XRF analysis was in the range: Ca (70–2140 μg/g), K (20–4930 μg/g), Sc (80–270 μg/g), Ti (1530–12,580 μg/g), Fe (50–6660 μg/g), Ni (20–2040 μg/g), Cu (20–850 μg/g) and Zn (40–460 μg/g). Cr had the lowest concentration (10 μg/g) in A ([Image: see text] 400) while Ti had the highest concentration (12,580 μg/g) in C ([Image: see text] 500) for all the coatings analyzed. AAS and XRF results agreed closely except for Fe with higher concentration. A ([Image: see text] 100) contained high concentration of the metals compared with others. Speciation study identified Mn as the most mobile element when present in the environment.
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spelling pubmed-55981702017-09-28 Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication Adekunle, Abolanle S. Oyekunle, John A.O. Baruwa, Suliat O. Ogunfowokan, Aderemi O. Ebenso, Eno E. Toxicol Rep Article This work assessed levels of heavy metals exposure from silver coatings of mobile phones recharge cards of three major companies (designated as A, B and C) with price denominations [Image: see text] 100, [Image: see text] 200 and [Image: see text] 400 from companies A, B and C respectively, which were carefully scratched using a plastic scraper into a glass tube. The coatings were acid digested for total metal concentration, while speciation experiment for Mn, Cu, Cd and Pb was carried out. Total metals and speciation analysis were done using AAS and XRF techniques. The total metal concentration from XRF analysis was in the range: Ca (70–2140 μg/g), K (20–4930 μg/g), Sc (80–270 μg/g), Ti (1530–12,580 μg/g), Fe (50–6660 μg/g), Ni (20–2040 μg/g), Cu (20–850 μg/g) and Zn (40–460 μg/g). Cr had the lowest concentration (10 μg/g) in A ([Image: see text] 400) while Ti had the highest concentration (12,580 μg/g) in C ([Image: see text] 500) for all the coatings analyzed. AAS and XRF results agreed closely except for Fe with higher concentration. A ([Image: see text] 100) contained high concentration of the metals compared with others. Speciation study identified Mn as the most mobile element when present in the environment. Elsevier 2014-05-22 /pmc/articles/PMC5598170/ /pubmed/28962242 http://dx.doi.org/10.1016/j.toxrep.2014.05.008 Text en © 2014 The Authors http://creativecommons.org/licenses/by/3.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Adekunle, Abolanle S.
Oyekunle, John A.O.
Baruwa, Suliat O.
Ogunfowokan, Aderemi O.
Ebenso, Eno E.
Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title_full Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title_fullStr Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title_full_unstemmed Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title_short Speciation study of the heavy metals in commercially available recharge cards coatings in Nigeria and the health implication
title_sort speciation study of the heavy metals in commercially available recharge cards coatings in nigeria and the health implication
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5598170/
https://www.ncbi.nlm.nih.gov/pubmed/28962242
http://dx.doi.org/10.1016/j.toxrep.2014.05.008
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