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Title: Spectrophotmetric Studies and Analytical Application of Au(III), Y(III) and Pd(II) Chelates with 5-choloro-2-pyridylazo-8-hydroxyquinoline
Authors: ali z. abu zuhri
adel h. radi
Issue Date: 1992
Publisher: Journal of Chemical Technology and Biotechnology
Abstract: A spectrophotometric study of Au(III), Y(III) and Pd(II) complexes of a reagent 7-(2-pyridylazo)-5-chloro-8-hydroxyquinoline (PACHQ) is presented. Gold(III) forms a 2:1 (L:M) violet complex at pH 9.5 (50% ethanol), while Y(III) and Pd(II) form 2:1 (L:M) red complexes at pH 6.5 and 7.5 respectively. The stability of these complexes has been determined. Beer's law is valid over the concentration range 0-7.87, 0-8.89 and 0-10.64?g ml?1 for Au(III), Y(III) and Pd(II) respectively. A number of foreign ions were tested for their interference. Synthetic solutions identical in composition to some Au(III) and Y(III) alloys are used to ascertain the suitability of the reagent.
Appears in Collections:Faculty & Staff Scientific Research publications

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