In the present study, a DLLME method combined with the spectrophotometry
was established for the preconcentration and rapid
determination of total iron using 5-Br-PADAP as the complexing
reagent. Compared with the cloud point extraction (CPE) , additional heating or other treating
procedure can be avoided. The present method for the determination
of iron has a good sensitivity and selectivity with a wider
linear range and has a good reproducibility and repeatability.