spectrochemical carrier

in atomic spectroscopy
https://doi.org/10.1351/goldbook.S05834
An @A00134@ which gives rise to a gas which can help to transport the vapour of the sample material into the excitation region of the source, e.g. carbon in an air atmosphere when carbon dioxide is formed.
Source:
Orange Book, 2nd ed., p. 160 [Terms] [Book]