DefinePK

Abstract

Joined cloud point extraction with liquid ion exchange used as sensitive method for separation and determination iron (III) the study appear the wave length of extreme absorbance for ion pair association complex of Fe3+has been (?max=349nm), so the preparation of ion pair complex need 0.3M HClin the presence of 100µg Fe3+/10mL and 0.5mL of TritonX-100 , with heating at 80ºC for 30min.and the thermodynamic data for extraction was ?Hex=0.128kJmol-1, ?Gex=-61.2kJ.mol-1, ?Sex=173.73J.mol-1.K-1. As well as the experimental studies shows there is un effect for electrolyte and interferences, so the stoichiometry appear the more feasible structure of ion pair association complex extracted was 1:1 (AYGG: FeCl4-), as well as the study include application for determination Fe (III) in different samples.