SELECTIVE SPECTROPHOTOMETRIC DETERMINATION OF MICRO AMOUNTS OF PALLADIUM AND OSMIUM.

BANI ROY, R P SINGH, A K SINGH

Abstract


In a strongly acidic medium 1(a-naphthyl)-4,4,6-trimethyl-IH,4H-pyrimidine-2-thiol (NTPT) forms  chloroforrn-extractable yellow  (Lamda-max 430 nm) and blue  (Lamda-max 590nm) coloured complexes (metal to  ligand ratio 1: 2) with palladium(II) and osmium(IV) respectively. Based on this, extractive spectro- photometric procedure for the determination of these metals separately and simultaneously was  developed. Large excesses (at least 70-80 fold) of transition and other platinum metals do not interfere  in the determination of both the metals.


Keywords


1-(a-naphthyl)-4,4,6-trimethy1-1H, 4H-pyrimidine-2-thiol palladium, osmium, determination.

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