oa South African Journal of Chemistry - Development of a reliable method for the spectrophotometric determination of palladium(II) with o-methoxyphenyl thiourea : separation of palladium from associated metal ions : research article
|Article Title||Development of a reliable method for the spectrophotometric determination of palladium(II) with o-methoxyphenyl thiourea : separation of palladium from associated metal ions : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 Arts, Commerce and Science College, Satral, India, 2 Jijamata College of Science and Arts, India and 3 Hanyang University, South Korea|
|Publication Date||Jan 2014|
|Pages||226 - 232|
|Keyword(s)||o-Methoxyphenyl thiourea, Palladium, Solvent extraction and Spectrophotometric determination|
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 chloroformat 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 µg mL-1. The molar absorptivity and Sandell's sensitivity were 3.38 x 103 L mol-1 cm-1 and 0.031 µg 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.
Article metrics loading...