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

Ashwini P Gaikwad

doi:10.4172/2157-7064.1000170

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 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 use of suitable masking agents enhances the selectivity of the method. The proposed method is rapid, reproducible and successfully applied for the determination of platinum (IV) in binary and synthetic mixtures. The separation of platinum (IV) from other associated metals has been studied. Comparison of the results with those obtained using an atomic absorption spectrophotometer were 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 jewellery [2]
The pH range observed for the quantitative extraction was 0.50-1.0 with n-octylaniline

Summary

Introduction

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 platinumcontaining solutions have diverse ratios of the concentrations of platinum and associate precious, base, and ferrous metals, acidities, and salt backgrounds. The platinum ion was extracted in the deactivated catalyst for the hydrochlorination reaction of ethyne by acidic thiourea [35] solution.

Results

Conclusion