Liquid Anion Exchange Chromatographic Extraction and Separation of Platinum(IV) with n-Octylaniline as a Metallurgical Reagent: Analysis of Real Samples

Table 7

Determination of platinum(IV) from catalysts.

Sr. no.	Alloy	Platinum(IV) taken, μg	Platinum(IV)  *Found by method in μg	Average, % recovery	RSD, %
(1)	Pt-Pd^a-Rh^a; catalyst on alumina	150	149.2	99.4	0.6
(2)	Pt-Rh^a; catalyst on alumina	150	149.5	99.6	0.4
(3)	Pt-Pd^a; catalyst on alumina	150	149.8	99.8	0.2
(4)	Pt; catalyst on alumina	300	299.5	99.8	0.2

aMasked with 20 mg tartrate.
*Average of five determinations.
Composition of synthetic mixtures in percentage
(1) Pt, 0.03–0.25; Rh, 0.005–0.03.
(2) Pt, 0.03–0.15; Pd, 0.02–0.12.
(3) Pt, 0.03–0.20; Pd, 0.03–0.150; Rh, 0.015–0.05.
(4) Pt, 0.3–0.8.