Abstract
The method of the direct atomic absorption determination of Pb and Cd in milk, cream and powder baby formula using the accessory ATZOND-1 for commercial graphite furnace is offered. The limits of detection have been improved in comparison with methods of traditional one-stage atomization and they are equal: in the liquid foods (in µg/l) for Pb – 0.5, Cd – 0.04; in the powder baby formula (in µg/kg) for Pb – 1.7 , Cd – 0.14. Preliminary mineralization of the probes is excepted and duration of the analysis is shortened. For maximum permissible inRussiaconcentrations: of lead 50 µg/kg RSD < 3 %; of cadmium 20 µg/kg RSD < 12%. Keywords: direct atomic absorbtion analysis, graphite atomizer, double-stage probe atomization, milk, milk foods (Russian) DOI: http://dx.doi.org/10.15826/analitika.2013.17.3.002 Y. А . Zakharov, О .B. Kokorina, D.S. Irisov 1 , R.R. Haibullin 1 , S.I. Hasanova Kazan (Volga region) Federal University , Kazan, Russian Federation 1 LLC «Atzond» , Kazan, Russian Federation
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