Abstract
A simple and selective method was developed for the determination of platinum(IV) with n-octylaniline in toluene. In present study, the use of n-octylaniline in toluene for the extraction of platinum(IV) from ascorbate media was carried out. The effect of various parameters, such as pH, equilibrium time, extractant concentration, and organic solvent on the extraction has been discussed. The back extraction of platinum(IV) has been performed. On the basis of slope analysis, the composition of the extracted species was determined as [RR′NH2+Pt(Succinate)2−](org). The interfering effects of various cations and anions were also studied, and the selectivity of the method is enhanced by using suitable masking agents. The proposed method is rapid, reproducible and successfully applied for the determination of platinum(IV) in binary and synthetic mixtures. The separation of pt(IV) from other associated metals has been studied. Comparison of the results with those obtained using an atomic absorption spectrophotometer also tested the validity of the method.
Highlights
The platinum group of metals (PGMs: Pt, Pd, Rh, Ir, Ru, and Os) are extremely scarce in comparison to the other precious metals due to to their low natural abundance and to the complexity of the processes required for their extraction and refinement
PGMs are used as conductors in the electrical and electronic industries, in extrusion devices, in dental and medical prostheses, and in jewelry [2]
The pH range observed for the quantitative extraction was 0.50–1.0 with noctylaniline
Summary
The platinum group of metals (PGMs: Pt, Pd, Rh, Ir, Ru, and Os) are extremely scarce in comparison to the other precious metals due to to their low natural abundance and to the complexity of the processes required for their extraction and refinement. Technological and analytical platinum-containing solutions have diverse ratios of the concentrations of platinum and associate precious, base, and ferrous metals, acidities, and salt backgrounds. This diversity arises from the complex and variable composition of raw materials.
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