Development of a Reliable Method for the Spectrophotometric Determination of Palladium(II) with o-Methoxyphenyl Thiourea: Separation of Palladium from Associated Metal Ions

Title
Development of a Reliable Method for the Spectrophotometric Determination of Palladium(II) with o-Methoxyphenyl Thiourea: Separation of Palladium from Associated Metal Ions
Authors
한성환
Keywords
Solvent extraction; spectrophotometric determination; o-methoxyphenyl thiourea; palladium
Issue Date
2014-06
Publisher
BUREAU SCIENTIFIC PUBL, P O BOX 1758, PRETORIA 0001, SOUTH AFRICA
Citation
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE, 권: 67, p 226-232
Abstract
A simple and sensitive method is described for the solvent extraction and spectrophotometric determination of palladium(II) using low concentrations of o-methoxyphenyl thiourea (OMePT). Trace concentrations of palladium(II) were quantitatively extracted when equilibrated with OMePT in chloroform at 1.0 mol L-1 hydrochloric acid media for 10 s. The absorbance of a yellow coloured palladium(II)-OMePT complex was measured at 325 nm. The palladium(II)-OMePT complex was stable for more than 72 h. The composition of extracting species was 1: 1, determined by mole ratio, Job's continuous variation method and it was confirmed by a log-log plot. Beer's law was obeyed up to 15.0 mu g mL(-1). The molar absorptivity and Sandell's sensitivity were 3.38 x 10(3) L mol(-1) cm(-1) and 0.031 mu g cm(-2), respectively. The method was free from a large number of interferences from cations and anions. The method was applied for separation of palladium(II) from multi-component mixtures and synthetic mixtures corresponding to alloy.
URI
https://journals.co.za/content/chem/67/1/EJC164273http://hdl.handle.net/20.500.11754/48759
ISSN
0379-4350; 1996-840X
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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