Collect. Czech. Chem. Commun. 1993, 58, 1013-1041

Study on 50 MHz ICP Torch with Medium Resolution Spectrometer. Determination of Rare Earth Elements in Complicated Matrices

Viktor Kanickýa, Jiří Tomanb, Vítězslav Otrubac and Lumír Sommerc

a Department of Chemistry Faculty of Education, Masaryk University, Porici 7, 603 00 Brno, Czech Republic
b Geological Survey UNIGEO, Polni 23/25, 639 00 Brno, Czech Republic
c Department of Analytical Chemistry, Masaryk University, 611 37 Brno, Czech Republic


ICP-OES is a suitable method for the determination of R.E.E. (rare earth elements),which exhibits advantages in the absence of interferences of evaporation, low detection limits and a great linear range of calibration graphs. A spectrometer having spectral bandwidth (SBW) 30 pm with 50 MHz ICP source were used. Optimum working conditions resulted from detailed studies of axial intensity distributions. Differences in axial intensity distribution were evident when compared with usual 27.12 MHz ICP sources. Matrix interferences of alkaline salts and acids have been evaluated and the optimum spectral lines selected respecting mutual spectral interferences of R.E.E.