Due to the separation and preconcentration step, it was
possible to obtain a low limit of detection in a working range of
250-fold. Further, it involves the use of FAAS, a simple technique
of easy operation, which has low operational and maintenance
costs compared with other absorption or emission techniques like
HG-AAS, GF-AAS, ICP-OES and ICP-MS. Also, it involves the use of
an eco-friendly non-toxic surfactant rather than the organic solvents,
which are conventionally used in trace analysis.