Apparatus for analysing the gas contained in a chamber by mass spectrometry, analysis method implementing the said apparatus and applications of the said method

摘要

The apparatus according to the invention essentially includes: - means (1) for sampling the gas in the chamber (2), - a mass spectrometer (3), - a lock (valve) (4) for injecting the sampled gas into the mass spectrometer (3), - means (5, 6) for isolating or connecting the injection and / lock(4) and the chamber (2) and/ôor the mass spectrometer (3), - means (7, 8) for periodically creating a vacuum in the injection hatch (4). The apparatus and the method which implements it are in particular intended to be used for the analysis of the internal atmosphere of a package or for checking the quantity of gas dissolved in a liquid contained in a package. <IMAGE>