DIRECT ELEMENTAL ANALYSIS OF WINES BY MICROWAVE INDUCED PLASMA ATOMIC EMISSION SPECTROMETRY AND INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETRY

Methods for the direct analysis of table wines by microwave induced plasma atomic emission spectrometry (MIP-AES) and inductively coupled plasma atomic emission spectrometry (ICP-AES) using matrix matching are presented. K, Na, Ca, Mg, B, Si, Al, Fe, Cu, Mn, Ba, Sr, Li, Zn are quantitatively determined from one dilution with an error of no more than 10% ( = 2). The range of constancy of analytical signals was determined when varying the concentrations of potassium, alcohol, and sucrose in MIP-AES analysis. It was shown that there is no decrease in the background signal when replacing nitrogen with air in the auxiliary flow, and that analytical characteristics improve when using yttrium as an internal standard in MIP-AES. The results were confirmed by capillary zone electrophoresis, the spiking method, and comparison of ICP-AES and MIP-AES analysis results.