الفهرس 
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Abstract
The present study was conducted to determine the residual amounts of heavy metals (aluminum and tin) in 16 infant formula, 15 milk powder and 15 condensed milk samples were collected from different markets in in Zagazig and Kafr sakr cities, Sharkia governorate during the period from November 2014 to January 2015. All samples were digested and analyzed by Atomic Absorption Spectrometry and Thermo scientific spectrophotometery.
1-Aluminum and tin residues in infant formula:
Average of aluminum and tin in infant formula were 7.13 mg/kg and 22.6 mg/ kg respectively. 90% of examined positive samples of infant formula had Al residues above permissible limits, while all examined samples had Sn residues below permissible limits. All samples were imported and packaged in metal cans. The calculated daily intake of Al and Sn from consumption of infant formula were 101.8 and 322.8 µg/kg b.w/day respectively, which represent about 10.18 % and 16.14 % from the Acceptable daily intake of Al and Sn. Also the calculated weekly intake of Al and Sn from consumption of infant formula were 712.6 and 2259.6 µg respectively, which represented about 35.6% and 16.1% of Provisional tolerable weekly intake.
It is evident from these results that Al and Sn are predominant toxic metals in examined infant formula samples.
The public health significance of Al and Sn was discussed.