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Atomization under pressure in graphite furnace atomic absorption spectrometry

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/0584-8547(77)80009-8
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FormatText, Article
Abstract
The effects of an externally applied pressure on the analytical characteristics of absorbance signals derived from analyte atomization in a heated graphite atomizer have been examined. A specially constructed graphite furnace fitted with a pressurizable housing allowed studies to be carried out under pressures up to 13 atm of an inert gas. Increasing pressure reduced both the integrated and peak sensitivities, improved the linear range of calibration curves and shifted the characteristic absorption pulse temperatures to higher values. The major factor contributing to reduced sensitivity is the Lorentz shift in the absorption line profile due to applied pressure. In addition, the temperature—time characteristics of the atomizer play a role in determining the extent to which the applied pressure affects the absorption signals.
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  • Spectrochimica Acta Part B: Atomic Spectroscopy 32, no. 5-6 (1977): 257–277.
LanguageEnglish
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

NPARC number21276862
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Record created2015-10-27
Record modified2020-03-13
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