A Comparison of Evaporation in Uncontrolled DC Arc in Classical Spectrography and in Computer-Controlled DC Arc in Optical Spectrometry in Analysis of Environmentally Relevant Elements
S. Ružičková
Department of Chemistry, Faculty of Metallurg, Technical University, Košice, Slovak Republic
J. Bajuszová
Department of Chemistry, Faculty of Metallurg, Technical University, Košice, Slovak Republic
M. Matherny
Department of Chemistry, Faculty of Metallurg, Technical University, Košice, Slovak Republic
L. Koller
Department of Chemistry, Faculty of Metallurg, Technical University, Košice, Slovak Republic
Abstrakt
Evaporation of Al, Cr, Ni and V in the classical uncontrolled DC arc spectrography and in the computer-controlled DC arc optical emission spectrometry was compared in the determination of the environmentally important elements. The experiments were carried out with a grating spectrograph PGS-2 and simultaneous multichannel LECO 750 spectrometer which was connected to the evaporation cell and adjusted to the Marinković plasma source. Standardized evaporation curves were obtained and the half-time and total evaporation time values were calculated. The basic statistical evaluation was also made.
