To demonstrate the robustness of the method and to extend its
applicability to other types of sample and detection systems, the
proposed method was applied to the determination of heavy metals
in solid CRMs; a soil sample (soil SO-2) and two sediment sample
(LGC 6156 and MESS-3) by the on-line FI–FAAS method. The concentration
of the analytes; Cd, Co, Cu, Ni and Pb in acid digests of
solid certified samples may be too low to measure directly by FAAS
and their determination may therefore require a preconcentration
step. The proposed method was therefore adopted to determine