Journal Name:
- İstanbul Üniversitesi Chimica Acta Turcica
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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