Determination of Selected Heavy Metals in Fruits of Casimiroa Edulis (White Sapote) by Using Flame Atomic Absorption Spectroscopy (FAAS)
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Date
2024-09
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Addis Ababa University
Abstract
The purpose of this study was the determination of selected heavy metals in fruits of casimiroa edulis samples that were randomly collected from three kebele of Merehabete wereda that is Kofna Sibewasha, Geb Zomoy and Alem Ketema 03 kebele. 0.5 g of oven dried sample was digested by mixing 2ml of 69% HNO3 and 1 ml of 70% HClO4 at a temperature of 240℃ for 2 hrs. The content of heavy metals (Cr, Ni Cu, Cd, Zn and Pb) in fruits of casimiroa edulis was determined using FAAS and obtained concentrations of these metals were compared with limit values set by WHO. The mean content of the selected heavy metals were determined from triplicate samples of fruits of casimiroa edulis, which were grown in three areas of Merehabete wereda. In this study the mean concentrations of selected heavy metals obtained in fruits of casimiroa edulis sample in mg/l were; Ni (BDL), Cd (0.01833±0.00338), Cu (BDL), Zn (0.21205±0.07279), Cr (BDL) and Pb (0.34883±0.0619).The mean concentration of heavy metals obtained in fruits casimiroa edulis were in the order of Pb > Zn > Cd and Cr, Cu and Ni were BDL. The concentrations of all metals (Cr, Ni Cu, Cd, and Zn) were below the guide line set by WHO. However, the concentrations of lead was higher the guide line set by WHO. Because of this they were not safe in terms of health risk. The level of some analyzed metals in this study is lower than the concentration of metals reported in different literatures with other similar family fruits.
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Determination of Selected, Heavy Metals in Fruits, Casimiroa Edulis (White Sapote), Using Flame Atomic Absorption Spectroscopy (FAAS)