Extraction-Spectrophotometric Determination of Palladium (II) With 2-Hydroxy-1-Naphthaldehyde-4-Phenyl-3-Thiosemicarbazone

Katsuya Uesugi, Tohru Nagahiro, Tetsu Kumagai and Hiroshi Nisioka

Department of Engineering Science, Faculty of Engineering, Himeji Institute of Technology, Himeji Japan.

ABSTRACT:

A method for the extractive spectrophotometry determination of palladium (II) with 2-hydroxy-1-naphthaldehyde-4-phenyl-3-thiosemicarbazone (HNPS) has been studied. The method is based on the formation of the palladium (ll)-HNPS complex which is exrracted into chloroform from sulfuric acid medium. The extracted species has absorption maxima at 412 and 437 nm with the molar absorptivity of 1.41 x 104 1 mol-1 cm-1 at the latter wavelength. The complex system conforms to Beer's law up to 8.0 μml-1 of palladium (II). The method has been satisfactorily applied to the determination of palladium in palladium brazing filler metal and in palladium-catalyst samples.

KEYWORDS:

Extraction-Spectrophotometric; Palladium

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Copy the following to cite this article: Uesugi K, Nagahiro T, Kumagai T, Nisioka H. Extraction-Spectrophotometric Determination Of Palladium (II) With 2-Hydroxy-1-Naphthaldehyde-4-Phenyl-3-Thiosemicarbazone. Orient J Chem 1991;7(4).

Copy the following to cite this URL: Uesugi K, Nagahiro T, Kumagai T, Nisioka H. Extraction-Spectrophotometric Determination Of Palladium (II) With 2-Hydroxy-1-Naphthaldehyde-4-Phenyl-3-Thiosemicarbazone. Orient J Chem 1991;7(4). Available from: http://www.orientjchem.org/?p=39825