Spectral line of an atom used for the measurement of analyte concentration by
atomic spectroscopy.
Note:
Characteristic lines include resonance and non-resonance lines.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 715 (https://doi.org/10.1515/pac-2019-0203)