Extraction and Spectrophotometric Determination of Palladium(II) with N-P-Chlorophenylbenzohydroxamic Acid

✍ Scribed by Y. K. Agrawal; S. P. Chudasma

• Publisher: Wiley (John Wiley & Sons)
• Year: 2010
• Weight: 172 KB
• Volume: 90
• Category: Article
• ISSN: 0037-9646
• DOI: 10.1002/bscb.19810901006

✦ Synopsis

Abstract

A rapid extraction and spectrophotometric determination of palladium with N‐p‐chlorophenylbenzohydroxamic acid (N‐p‐Cl‐BHA) is described. The palladium forms an orange coloured complex with N‐p‐Cl‐BHA at pH 3.0. It is extracted with chlorobenzene and has a maximum absorbance at 430 nm. Its molar absorption coefficient is 7.0×10^2^ 1 mol^−1^ cm^−1^. The sensitivity of the Pd‐p‐Cl‐BHA complex is enhanced by the addition of dithizone and has a maximum absorbance at 520 nm with a molar absorption coefficient of 3.0×10^3^ 1 mol^−1^ cm^−1^. The effects of pH, solvents, reagent concentration and diverse ions are studied.