Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Polymer Membranes based on Ionophore-impregnated for Nutrients Detection by Electrochemical Methods
Author(s): Zeina Mohammed Kadam, Christopher David GweninPolymer membranes are becoming ever more attractive for trace analysis based on ionophore-impregnated; offering a wide variety of potential for an even wider variety of applications. Here we report a series of macrocyclic compounds with different substituents; which have been examined for their potential to detect potassium phosphate in the presence of other potassium counter ions. The ion selective electrode based on dibenzo-18-crown-6 exhibited a near Nernstian response for potassium phosphate over a wide concentration range of 5 × 10-5 mol/l-1 to 1 × 10-1 mol/l-1 with a low limit of detection of 3.2 × 10-6 mol/l-1. The resulting electrode exhibited a shelf life of 40 days with negligible drift. The ensemble was use used to determine K+ ions in a range of real samples the results of which showed a strong correlation with the data obtain from the same samples via atomic absorption spectroscopy. The use of dibenzo-18-crown-6 showed the potential towards a method for the quantitative determination of potassium phosphate in water samples.
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Citations : 15261
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