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A Method for the Evaluation of Background-Corrector Performance in Graphite Furnace Atomic Absorption Spectroscopy
Volume 39, Number 5 (Oct. 1985) Page 882-883
Niemczyk, T.M.; Yin, I.H.
When graphite furnace atomization is employed in atomic absorption spectroscopy, background absorption and scattering effects are often encountered. The back-ground absorption is often due to broad band absorption by molecules formed or vaporized by the atomizer. Scattering might be caused by the ejection of carbon particles from the atomizer surface during the atomization stage. Because of these problems, virtually all manufacturers of atomic absorption instrumentation supply simultaneous background-correction systems. These systems are based on the continuum lamp system described by Koirtyohann and Pickett, the Zeeman effect described by Hadeishi and McLaughlin, or the self-absorption broadening of the hollow cathode lamp described by Smith and Hieftje. All of these systems have merit and all can provide adequate background correction for a variety of sample types.