An application of the zeeman effect to analytical atomic spectroscopy-II Background correction.
A double-beam atomic-absorption spectrometer is described in which sample and reference beams are generated by Zeeman splitting of the source emission-line. The instrument was found to give satisfactory correction for lamp drift and for background scatter signals. The main advantage of the technique is the simplicity of the optical system used. Analytical sensitivity is found to be generally poorer than that given by single-beam measurements, largely because of the poor spectral characteristics of the lamps used here in comparison to their modern commercial hollow-cathode counterparts.
Stephens
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Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, Halifax, N.S., Canada.
Ryan
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