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Non-Extractive Spectrophotometric Determination of Palladium in Biological Samples Using Pyridoxal Thiosemicarbazone (PTSC)

Journal: International Journal of Advanced engineering, Management and Science (Vol.3, No. 4)

Publication Date:

Authors : ; ;

Page : 387-396

Keywords : Spectrophotometric determination; Pyridoxal thiosemicarbazone; Molar absorptivity; Sandelle’s sensitivity and hydrogenation catalysts.;

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A very simple, highly selective and non-extractive spectrophotometric method for the trace amounts of palladium(II) has been developed. Pyridoxal thiosemicarbazone (PTSC) has been proposed as a new analytical reagent for the direct non-extractive spectrophotometric determination of palladium (II). The reagent reacts with palladium in acidic medium(pH 2.0, CH3COONa and Con. HCl ) to form a pale yellow coloured 1: 2 (M : L) complex. The reaction is instantaneous and the maximum absorption was obtained at 420 nm and remains stable for 2 hrs. The molar absorptivity and sandell's sensitivity were found to be 1.63 x 104 L mol-1 cm-1 and 0.635 μg cm-2 respectively. Linear calibration graphs were obtained for 0.9- 10.0 μg/ml of palladium(II). The method is highly selective for palladium and successfully used for determination of palladium in various hydrogenation catalysts.

Last modified: 2017-05-04 22:50:19