For the determination of trace metals in natural and mineral waters different
spectrochemical methods are used. However, flame atomic absorption spectrometry
(FAAS) is one of the most extensively used techniques for determining various
elements with significant precision and accuracy. This analytical technique is remarkable
for its selectivity, speed and fairly low operational cost.9 However, in
some cases there are many difficulties in determining traces of heavy metals in environmental
samples due to insufficient sensitivity or matrix interferences. Thus, a
preconcentration and/or separation step is necessary