Multivariate optimisation of simultaneous multi-element analysis by furnace atomic non-thermal excitation spectrometry (FANES)

Abstract

For the simultaneous determination of Ni, Co, Cu and Cr by furnace atomic non-thermal excitation spectrometry (FANES), the optimum atomisation temperature T_at, gas discharge pressure p_Ar and discharge current i_HK of the FANES emission source with respect to the signal to noise ratio (SNR) are determined. As the maximum values of each of the SNRs are not achieved simultaneously, a statistical optimisation method including both grid search and differential extreme value evaluation is applied to the compromise conditions.