Levels and Health Risk Assessment of Heavy Metals in Tubers from Markets in the Kumasi Metropolis, Ghana

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Author(s) J. Apau | A. Acheampong | J.A. Appiah | E. Ansong
Pages 534-539
Volume 3
Issue 9
Date September, 2014
Keywords Tubers, Atomic Absorption Spectroscopy, Heavy Metals, Health Risk
Abstract

Tubers play a significant role in human diet. Samples of tubers were obtained from five different markets from Kumasi. Pulvurised samples were digested with concentrated nitric acid. Heavy metals Zn, Fe, Cu and Cd were analysed using Atomic Absorption Spectroscopy in four tubers which include yam, cassava, cocoyam and sweet potatoes. The metals were analysed using Atomc Absorption Spectrophotometer 220. The concentration ranges were 0.862 to 2.144 mg/kg for Cu, 0.476 to 0.778 mg/kg for Cd, 11.246 to 58.728 mg/kg for Zn and 27.918 to 45.872 mg/kg for Fe. Health risk assessment showed that consumers are not in danger as far as these metals are concerned.

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