Asessment of selected heavy metals in onion bulb and onion leaf (allium cepa l.), in selected areas of central Rift valley of Oromia Region, Ethiopia

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miheretu bedassa alemayehu abebaw temesgen desalegn
Published Mar 13, 2018


This study was conducted to determine the levels of heavy metals (Pb, Cr, Cd, Fe, Cu, Zn, and Mn) in onion bulb and  onion leaf around Mojo, Meki and Ziway areas to assess the concentrations of the heavy metals. The levels of the elements were determined using flame atomic absorption spectrometer. The concentrations of Cr in onion bulb and Fe in onion leaf were above the permissible level (2.3mg/kg, 425.5mg/kg) set by FAO/WHO at Mojo (4.87mg/kg, 1090.40 mg/kg), Meki (4.13mg/kg, 1836.47 mg/kg) and Ziway (3.33mg/kg, 764.33mg/kg) respectively. The results generally indicate that the consumption of these onion bulb could be the health risk respective to Cr.

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