| 1. A method of detecting gaseous species in a mixture by light-emission spectroscopy, in which use is made of the radiation
emitted by a plasma present in the gas mixture under analysis, a measurement system is used to take a raw optical spectrum
of said radiation emitted by the plasma, and the raw optical spectrum is compared with a library of reference optical spectra,
the method comprising:
generating a pruned optical spectrum, including making use, in the raw optical spectrum, of only those zones of the spectrum
that present a significant shape corresponding to a predefined shape criterion of said gaseous species in said mixture, and
subsequently comparing said pruned spectrum with the library of reference optical spectra, and determining the presence of
gaseous species based on the comparing, wherein said detecting of said gaseous species is implemented in real-time.
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