Spectrophotometric Determination of Palladium(II) Using 4-(Dimethylamino)benzaldehyde Thiosemicarbazone

• Published in: Bulletin of the Chemical Society of Japan Vol. 66; no. 9; pp. 2536 - 2540
• Main Authors: Shetty, A. Nityananda, Gadag, Rudrayya V
• Format: Journal Article
• Language: English
• Published: Tokyo The Chemical Society of Japan 01.09.1993; Chemical Society of Japan
• Subjects: Chemistry; Exact sciences and technology; Inorganic chemistry and origins of life; Kinetics and mechanism of reactions; Divalent metal Complexes; Absorption spectrometry; Thiosemicarbazone; Palladium II Complexes; Organic ligand; Platinoid Complexes; Transition metal Complexes
• ISSN: 0009-2673; 1348-0634
• DOI: 10.1246/bcsj.66.2536

A simple, rapid, and selective spectrophotometric method is proposed for the determination of palladium(II), using 4-(dimethylamino)benzaldehyde thiosemicarbazone (DMABT) as a spectrophotometric reagent. The reagent forms a 1 : 2 complex (Pd : Reagent) with Pd(II) in the pH range 2.2—3.6. The complex is soluble in aqueous solution containing 20% acetone and 30% ethanol by volume. Beer’s law is valid upto 2.3 ppm of palladium. The molar absorptivity is 4.59 × 104 dm3 mol−1 cm−1 and Sandell’s sensitivity 2.33 × 10−3 μg cm−2. The method tolerates large number of cations and anions.