The metal concentrations were determined by
flame atomic absorption spectrometry. The proposed method was applied to the
determination of trace amounts of metals in aqueous solution (20 μg l-1). The %
recovery and % RSD were within the range of 83-112% and 2-15% respectively. The
method detection limit was 20, 3 and 10 μg l-1 for Pb, Cu and Cd respectively.