Affiliation:
1. Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
Abstract
A direct-current arc device using coaxial electrodes and an external magnetic field is combined with a glass-frit nebulizer for the analysis of metallic elements in aqueous samples. The magnetic field is applied parallel to the electrode axis to produce a magnetron-type rotation of the arc current channel. The resulting plasma is diffuse and is more easily penetrated by the aerosol particles. The plasma is viewed normal to its axis at one end of the cylindrical electrode assembly. The intense continuum background from the current channel is masked by withdrawing the center electrode into the outer cylindrical electrode. The effects of electrode configuration and plasma current on analysis line-to-background ratios are described. Preliminary analytical data are presented for Cu, Mn, Mg, and Ca.
Subject
Spectroscopy,Instrumentation
Reference27 articles.
1. Characterization of a hybrid flame/arc excitation source using monodisperse aerosol introduction
2. Kranz E., in Emissionssektroskopie, Ritschl R., Holdt G., Eds. (Akademie-Verlag, Berlin, 1964), p. 160.
3. Fassel V. A., in Proceedings of the XVI Colloquium Spectroscopicum Internationale: Plenary Lectures and Reports (Hilger, London, 1971), p. 63.
4. The plasma jet as a spectroscopic source
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