The method for determining lead (Pb) and cadmium (Cd) in milk

ABSTRACT

Lead (Pb) and cadmium (Cd) in milk were determined by atomic absorption spectrometry, using milk sample inorganication on sand-separated stove and sample inorganication equipment with graphit-Digi PREP Jr heat stabilization system. Results: sample inorganication equipment with heat stabilization system has the advantage of saving chemical and time. Atomic absorption spectrometry method and atomization technique in graphite furnace combined with Zeeman standardization technique allows determining Pb and Cd with limits of 0.0005 μg/ml and 0.005 μg/ml, respectively. This method has been used to check the quality of milk in general as well as to evaluate the effect of Pb and Cd contamination in epidemiology