%0 Journal Article %T Preconcentration Procedure using Vortex Agitator System for Determination of Trace Levels of Cadmium by Flame Atomic Absorption Spectrometry %A CHamsaz, Mahmod %A Eftekhari, Mohammad %A Atarodi, Atefe %A Asadpour, Saeid %A , %J Journal of the Brazilian Chemical Society %@ 0103-5053 %D 2012