Spectrophotometric determination of palladium(II) with N-decylpyridine-4-amine from malonate media

Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad-431 004,

Maharashtra, India

E-mail : abrchem9@gmail.com Fax : 91-240-2403335

Manuscript received online 27 August 2013, revised 18 October 2013, accepted 01 November 2013

pectrophotometric determination of palladium(II) with N-decylpyridine-4-amine in xylene from malonate medium was carried out. Palladium(II) was extracted quantitatively with 10 ml of 1 × 10^–4 M reagent concentration in xylene from 0.025 M sodium malonate concentration in 25 ml aqueous phase with 1 : 1 ammonia and estimated spectrophotometrically with pyridine-2-thiol at 410 nm. The effect of metal ions, acid, reagent concentrations and various foreign ions have been investigated. The method affords quantitative binary separation of palladium(II) and is applicable to the analysis of synthetic mixtures and alloys. The method is highly selective, simple and reproducible. The molar absorptivity and Sandell’s sensitivity of palladium(II) N-decylpyridine-4-amine complex is (1.9 × 10⁵ L mol^–1 cm^–1) and (0.065 µg cm^–2), respectively which indicates the applicability of the method.