Abstract
As a continuation of earlier work on arc sources for the spectrochemical analysis of powdered samples, a source appropriate for multi-element analysis of trace elements in solution has been developed. The nebulized solution to be analysed is introduced into a horizontal graphite tube in the gap between two plasmas rotating in a magnetic field. Both water and ethanol have been used as solvents and the effect of lithium additions on the detection limits for certain elements has been studied. This source provides advantageous conditions for the determination of trace elements present at very low concentrations. Source parameters investigated include a study of the magnetically induced rotation of the plasmas by high speed cine photography, and the temperature distribution within the tube. Both aqueous and ethanol solutions were used and the effect of lithium additions was measured.
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