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An investigation into the Presence of Heavy Metals in Bread Samples from Lagos Metropolis

AKINNIYI, F. E. and OGUNLUSI, R.O. and OLALEYE, B.O. (2016) An investigation into the Presence of Heavy Metals in Bread Samples from Lagos Metropolis. In: Covenant University Chemistry Workshop/Conference 2016.

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This research study was carried out to assess the presence of heavy metals (cadmium and lead) in bread sold at bus terminals in Lagos metropolis. The concentration of cadmium and lead were determined by Atomic Absorption Spectrometry (AAS). Eleven sampling sites were selected with the metropolis. A total of thirty three bread samples were analysed. The moisture content of samples had mean value of 22.3 x 10-1 ± 5.06 x 10-2 g. The overall mean concentration of cadmium was 2.19 x 10-2 + 1.24 x 10-2 mg/kg with 2.66 x 10-2 + 0.83 x 10-2 and 1.86 x 10-2 +1.46 x 10-2 mg/kg for labeled and unlabelled bread samples respectively. 51.3% of the analysed samples contain Cadmium. Mean concentration of lead was 3.2 x 10-1 + 2.6 x 10-1 labeled bread samples have 1.8 x 10-1 + 2.02 x 10-1 and unlabeled samples have 6.3 x 10-1 + 0.24. 2% of samples contain lead. Heavy metals such as lead and mercury are known to be toxic metals with no beneficial effects.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 10 Aug 2016 13:38
Last Modified: 10 Aug 2016 13:38

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