Determination of Impurities in Vanadium Disilicide and Vanadium Pentoxide by Atomic Absorption Spectrometry and Inductively Coupled Plasma-Atomic Emission Spectrometry after Matrix Separation

Abstract

The vanadium matrix in vanadium disilicide and vanadium pentoxide changed to an anionic V(V)-hydrogen peroxide complex before the sample solution was loaded onto the cation exchange resin. Concentrations and volumes of acids for the adsorption, washing and elution of diverse elements were studied. Nitric acid was used as the eluent. Twenty one elements (Al, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, In, K, Mg, Mn, Na, Ni, Pb, Sn, Ti, Zn and Zr) were quantitatively adsorbed and eluted. Flame and graphite furnace atomic absorption spectrometry and inductively coupled plasma-atomic emission spectrometry were applied to the determination of impurities after the matrix separation.