A sensitive, precise and reliable flow-batch method for the determination of aluminium (Al) was
developed using a sequential injection-monosegmented flow system incorporating a mixing chamber
unit. Eriochrome cyanine R (ECR) was used as a chromogenic reagent in the presence of N,Ndodecyltrimethylammonium
bromide (DTAB). The Al-ECR complex at pH 6 gave a maximum absorption
at 584 nm. In-line single standard calibration and a standard addition procedure were developed
employing the monosegmented flow technique.