Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7146565 | Sensors and Actuators B: Chemical | 2014 | 6 Pages |
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 200Â mg of PVC, 50Â mg of Aliquat 336, 50Â mg of 2-NPOE and 1Â ÃÂ 10â3Â mol/L CAS was found to be the optimum formulation for the preparation of PIMs. Wide dynamic range of Al(III) determination (0.2-50Â 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.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Noor Izyan Ngarisan, Che Wan Zanariah Che Wan Ngah, Musa Ahmad, Bambang Kuswandi,