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Home  >  Volume 36 (no2)

DETERMINATION OF HEAVY METALS IN BREAD BAKED IN GOMBE METROPOLIS, USING ATOMIC ABSORPTION SPECTROMETERY TECHNIQUE BY SEYDOU H.and TIMOTY W.(pages 319-324)
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ABSTRACT

Concentrations of heavy metals were determined in some bread samples obtained from some bakeries within Gombe metropolis. The bread samples were digested using nitric (HNO3)and hydrochloric (HCI) acid in the ratio of 3:1 and analyzed with the help of Atomic Absorption Spectrometer (AAS) to determine heavy metals. The mean concentration for each heavy metal in the analyzed sample was calculated. Concentrations were compared with the permissible levels set by WHO.Results showed that the levels of Copper, Magnesium, and Manganese in the bread samples are 0.075±0.295µg/g, 22.70±4.130µg/g and 63.42±10.606µg/g respectively, but lead was not detected in any of the samples. When compared with standards (WHO), heavy metal concentration levels were found to be within safe limit. Onlymagnesium concentration (22.7µg/g) was greater than the WHO value (20µg/g). 

KEYWORDS: Atomic Absorption Spectrometry(AAS), Bread, Heavy metals, Gombe Metropolis.

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