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DETERMINATION OF PALLADIUM(II) IN ALLOYS, CATALYST AND COMPLEXES USING 1-PROPANETHIOL AS A RELEASING REAGENT

Journal Name:

  • İstanbul Üniversitesi Chimica Acta Turcica

Publication Year:

  • 2006
Author Name
Abstract (2. Language): 
A simple, rapid and accurate complexometric method for the determination of palladium(II) is proposed, based on the selective masking property of 1-propanethiol towards palladium(II). In the presence of diverse metal ions, palladium(II) is complexed with excess of EDTA and the surplus EDTA is back titrated at pH 5-5.5(acetic acidsodium acetate buffer) with standard lead nitrate solution using xylenol orange as indicator. An excess of a 0.2% aqueous solution of 1-propanethiol is then added to displace EDTA from Pd(II)-EDTA complex. The released EDTA is titrated with the same standard lead nitrate solution as before. Reproducible and accurate results are obtained in the concentration range 0.5mg -15.30mg of palladium with relative error of ±0.41% and coefficient of variation not exceeding 0.27%. The effect of diverse ions are studied. The method is used for the determination of palladium in alloys, complexes and catalysts.
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  • English

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