Spectrophotometric determination of palladium in catalysts with glyoxal bis(4-phenyl-3-thiosemicarbazone)
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 111 (7) , 747-755
- https://doi.org/10.1039/an9861100747
Abstract
The behaviour of glyoxal bis(4-phenyl-3-thiosemicarbazone)(GBPT) with a variety of metal ions has been studied by spectrophotometry in a medium containing 60% of dimethylformamide and its potential as an analytical reagent has been assessed. A method for the spectrophotometric determination of palladium is proposed. The green 1 : 1 palladium(II)-GBPT complex (ε= 3.2 × 103 l mol–1 cm–1 at 635 nm and 1.5 × 103 l mol–1 cm–1 at 700 nm) is formed at pH 9.6–1 N acidity. The spectrophotometric method has been applied to the determination of palladium in several sample catalysts.Keywords
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