ICP-AES Dtermination of 13 Impurity Elements in Potassium Metavanadate

A method for the determination of 13 impurity elements, including Si, Al, Ca, Mg, P, Cu, Ni, Cr, Fe, Ti, Mn, Pb and As, in potassium metavanadate by ICP-AES was proposed in this paper. The matrix interferences were eliminated by optimizing background correction region and working conditions of instrument. Analytical spectral lines of the elements for the determination were selected and optimized. Values of detection limit (3s) found were in the range of 0.000 1%-0.001 9%. The proposed method was used in the analysis of 2 CRM′s (V2O5 and 80 ferrovanadium), and the results obtained were in consistency with the certified values. Values of recovery and RSD′s (n=8) found were in the ranges of 90.0%-107% and 0.30%-8.1% respectively.