Publication: Optimization of polymer inclusion membranes (PIMs) preparation for immobilization of Chrome Azurol S for optical sensing of aluminum(III)
No Thumbnail Available
Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Determination of Al(III) from aqueous samples using Chrome Azurol S (CAS) as reagent immobilized in polymer inclusion membranes (PIMs) was discussed. The PIMs was prepared using poly (vinyl chloride) (PVC), 2-nitrophenyl octyl ether (2-NPOE) and Aliquat 336 as polymer matrix, solvent and ion carriers respectively. Experimental designs for four factors (weight of PVC, Aliquat 336, 2-NPOE, and the concentration of CAS) were used for the optimization of the membrane fabrication. For this purpose, a two level half factorial design, which involves eight experiments, was adopted. The combination of 200 mg of PVC, 50 mg of Aliquat 336, 50 mg of 2-NPOE and 1 � 10-3 mol/L CAS was found to be the optimum formulation for the preparation of PIMs. Wide dynamic range of Al(III) determination (0.2-50 ppm), better reproducibility within the same batch, good repeatability and photostability with RSD 1.21% and 0.93%, respectively. The calculated t values indicated that there is no significant difference between the two methods at the 95% confidence level and thus there is no bias in the method. � 2014 Elsevier B.V.
Description
Keywords
Al(III), Chrome Azurol S, Half factorial design, Optical sensing, Optimization, Polymer inclusion membrane, Aluminum, Chlorine compounds, Optimization, Polyvinyl chlorides, Chrome Azurol S, Half factorial designs, Membrane fabrication, Optical sensing, Optimum formulation, Polymer inclusion membranes, Polymer inclusion membranes (PIMs), Wide dynamic range, Design of experiments, Optimization