2-Mercaptoethylamine as a Masking Agent for the Complexometric Determination of Palladium(II) in Catalysts, Alloys and Complexes

Shetty, Prakash and Shetty , Nityananda (2008) 2-Mercaptoethylamine as a Masking Agent for the Complexometric Determination of Palladium(II) in Catalysts, Alloys and Complexes. Journal of the Chilean Chemical Society, 53 (3). pp. 1611-1614. ISSN 0717-9707

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Abstract

A simple, rapid and accurate complexometric method for the determination of palladium in the presence of other metal ions is described, based on the selective masking ability of 2-mercaptoethylamine (MEA) towards Pd(II). Palladium(II) along with other associated metal ions present in a given sample solution is first complexed with an excess of EDTA and the surplus EDTA is titrated with zinc sulphate solution at pH 5-6 (acetic acid-sodium acetate buffer) using xylenol as indicator. A known excess of 0.2% aqueous solution of MEA is then added to displace EDTA from Pd(II)-EDTA complex and swirled well. The released EDTA is again titrated with zinc sulphate solution as before. The method works well in the range 2-20 mg of palladium(II) with the relative error ± 0.27 and the relative standard deviation < 0.35%. The effect of the presence of various diverse ions on the accuracy of the results has been studied. The method has been satisfactorily applied for the determination of palladium in catalysts, alloys and complexes.

Item Type: Article
Additional Information: © Sociedad Chilena de Química
Uncontrolled Keywords: palladium determination, complexometry, masking reagent, 2-mercaptoethylamine
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 11 Jan 2012 08:46
Last Modified: 11 Jan 2012 08:46
URI: http://eprints.manipal.edu/id/eprint/2146

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