Online Concentration Technology Determination of Lead and Cdmium in Oils by Graphite Furnace Atomic Absorption Spectrometry
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Abstract:
A new method using microwave digestion technique and concentration technique was developed for the determination of Pb and Cd in oils by graphite furnace atmotic absorption spectrometry (GFAAS). The drying steps repeated four times and sample was concentrated five times, then ashed, atomized and purified. Through this process the contents of Pb and Cd were increased, so as to ensure accuracy of determination results. The method was applied to the determination of Pb and Cd in oils with satisfactory results. The RSD were lower than 6.0. The recoveries were more than 95%.
