New Design of Flow Injection Unit for Determination of Aluminum (Iii) by Alizarin Dye

A new simple and rapid method was reported for the accurate and precised spectrophotometric determination of Aluminum [Al
(III)] using flow injection analysis (FIA). The method is based on determination of Al (III) by Alizarin dye spectrophotometrically
at 494nm.The variousphysical and chemical parameters affecting on determination of Al have been investigated including flow
rate, reaction coil length, and volume of reagent (Alizarin), volume of sample, pH,and concentration of both reactants.The
precision and accuracy of the results were determined through reproducibility. The interferences of ions were also checked using
different ions. The method allows the determination of linear range (2-140) mg/l and the sampling rate of 120 samples per hour,
the detection limit (0.5 mg/l) for FIA. Relative standard deviation for (60mg/l), n=10 for the method is found (0.274% for FIA).
The applications of this method were also studied for some pharmaceutical samples. Dispersion coefficient is measured for the
method.