Spectrophotometric Determination of Palladium

The simple, rapid spectrophotometric method for palladium(II) ions determination using a new analytical reagent is described. The interaction of Pd(II) ions with a reagent, of the class of azolidones, 4-(N′-(4-imino-2-oxo-thiazolidine-5-ylidene)-hydrazino)-benzoic acid, in water medium results in th...

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Bibliographic Details
Published in:Journal of chemistry 2020-05, Vol.2020
Main Authors: Tymoshuk, Oleksandr S, Fedyshyn, Orest S, Oleksiv, Lesia V, Rydchuk, Petro V, Matiychuk, Vasyl S
Format: Article
Language:English
Subjects:
Benzoic acid
Chemical tests and reagents
Ethylenediaminetetraacetic acid
Organic acids
Palladium
Palladium catalysts
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Summary:The simple, rapid spectrophotometric method for palladium(II) ions determination using a new analytical reagent is described. The interaction of Pd(II) ions with a reagent, of the class of azolidones, 4-(N′-(4-imino-2-oxo-thiazolidine-5-ylidene)-hydrazino)-benzoic acid, in water medium results in the formation of a complex. The Pd(II)-p-ITYBA complex shows maximum absorbance at a wavelength of 450nm. The molar absorptivity is 4.30×10[sup.3]L·mol[sup.-1]·cm[sup.-1]. The optimal pH for complex formation is 7.0. The developed method has a wide linearity range of 0.64-10.64µg·mL[sup.-1] for Pd(II). The detection limit is 0.23µg·mL[sup.-1]. It was found that Co(II), Ni(II), Zn(II), Fe(III), Cu(II), Al(III), and many anions do not interfere with the Pd(II) determination. The proposed method was tested in the analysis of model solutions and successfully applied for the determination of palladium in catalyst. The obtained results show that this method can be used for serial determinations of palladium in various objects.
ISSN:2090-9063
DOI:10.1155/2020/8141853