الفهرس | Only 14 pages are availabe for public view |
Abstract In the present study the concentrations of some trace elements iron (Fe), zinc (Zn), copper (Cu), selenium (Se) and chromium (Cr) and also some pollutant elements such as lead (Pb) and cadmium (Cd) in some Egyptian food groups (vegetables, cereals, legumes and milk) were determined by using atomic absorption spectrometry (AAS) either with burner type in case ofFe,Zn and Cu detection or with graphite furnace atomic absorption spectrometry (GFAAS) in the case of determination of Se, Cr, Pb and Cd. The results were as follows: I. Vegetables analysis showed that, in general leafy vegetables contain the highest levels of Fe, Zn, Se and Cr, also okra as seed-pod vegetables contain high levels of Zn, Se and Cr. Root and tuber vegetables such as potato and yellow carrots reported the highest value of Pb and Cd as well as garden peas from seed-pod vegetables. 2. Cereals and legumes analysis showed that wheat as cereals showed the highest levels of Fe, Zn, Se and Cr, while Fe, Zn, Cu, Se and Cr were relatively higher in legumes than in cereals. Pb and Cd levels in cereals and legumes varied and reflected the environmental pollution, the values still within the permissible levels. 3. Milk analysis showed that the different types of milk either fresh or dried were considered a poor source for tested trace elements, whereas concentrations of Pb and Cd were nearest the minimum range of the permissible levels. |