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observation space

in flame emission and absorption spectrometry
The intersection of the optical beam and that part of the flame where the net signal is at least half of the maximum net signal. The characteristics of the observation space depend on the temperature of the flame, the stoichiometry of the gases and the properties of the processed fluid (presence of proteins for instance). The observation space in atomic absorption is analogous to the observation space of a cuvette in molecular absorption spectrometry.
Source:
PAC, 1986, 58, 1737 (Quantities and units in clinical chemistry: Nebulizer and flame properties in flame emission and absorption spectrometry (Recommendations 1986)) on page 1741
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.O04272.
Original PDF version: http://www.iupac.org/goldbook/O04272.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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