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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/1543
Title: Sorption-spectrophotometric method for the determination of Pd(II) in aqueous solutions
Authors: Vasić, Vesna
Savić, Jasmina
Vukelić, Nikola 
Keywords: Azo-dyes;Immobilization;Ion-exchange colorimetry;Ion-exchangers;Palladium
Issue Date: 1-Jan-2004
Journal: Journal of the Serbian Chemical Society
Abstract: 
The reaction of Pd(II) with 1,8-dihydroxy-2-(pyrazol-5-ylazo)-naphthalene- 3-6-disulphonic acid (PACA) sorbed onto Dowex 1-X8 ion-exchange resin was investigated with the aim of developing an absorption-spectrophotometric analytical method for the determination of low Pd(II) concentrations in water. The immobilized reagent formed a 1:1 complex with Pd(II) having an absorption maximum at 650 nm. Parameters, such as pH, wavelength and contact time were optimised for a given amount of the sorbed reagent. The linearity range of absorbance vs. Pd(II) concentration extended from 5×10-6 - 5×10-5 M, 5×10-7 - 5×10-6 and 2.5×10-8 - 2.5×10-7 M when using 10, 100 and 200 ml of sample solution, respectively. With a 200 ml sample, the detection limit was 2.5×10-7 M Pd(II). Most metals, except Cu(II), did not interfere when present in up to 100 times the concentration of Pd(II).
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/1543
ISSN: 0352-5139
DOI: 10.2298/JSC0404309V
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry