Sorption-spectrophotometric method for the determination of Pd(II) in aqueous solutions-Reference-Cited by-同舟云学术

Sorption-spectrophotometric method for the determination of Pd(II) in aqueous solutions

Published:2004 Issue:4 Volume:69 Page:309-317
ISSN:0352-5139
Container-title:Journal of the Serbian Chemical Society
language:en
Short-container-title:JSCS

Author:

Vasic Vesna¹,Savic Jasmina²^ORCID,Vukelic Nikola²

Affiliation:

1. Department of Physical Chemistry, Vin~a Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia and Montenegro

2. Faculty of Physical Chemistry, Belgrade University, P. O. Box 137, 11001 Belgrade, Serbia and Montenegro

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 5x10-6 ? 5x10-5 M 5x10-7 ? 5x10-6 and 2.5x10-8 ? 2.5x10-7 M when using 10, 100 and 200 ml of sample solution, respectively. With a 200 ml sample, the detection limit was 2.5x10-7 M Pd(II). Most metals, except Cu(II), did not interfere when present in up to 100 times the concentration of Pd(II).

Publisher

National Library of Serbia

Subject

General Chemistry

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