Saes Getters S.p.a.

Luca Pusterla

Marco Succi

Antonio Bonucci

Robert M Stimac

Roberto Giannantonio

Gianluca Galliani

A method is provided for the quantitative analysis of the contents, in nitrogen, of hydrogen and methane by ionic mobility spectrometry. The method includes the steps of: a) performing a measurement of the apparent hydrogen concentration in the nitrogen to be analyzed; b) performing a measurement of the apparent hydrogen concentration in a flow of the same sample of nitrogen, purified of all impurities but methane; and c) comparing the two measurements. A system of branched lines is also provided for carrying out the method.

Method of measuring the concentration of hydrogen and methane in nitrogen by ion mobility spectrometry

A method for carrying out analyses of a gas comprising one or more species S, S, . . . , Sby using of ion mobility spectrometry includes in carrying out two subsequent analyses in different conditions and comparing the results of these two analyses. The different conditions in the two analyses are such as to modify either the residence time of the ions corresponding to the species in the reaction zone or in the drift zone of the ion mobility spectrometer, or, selectively, the concentration of at least one of these ions.

Method for carrying out ion mobility spectrometry analyses

A method and apparatus for carrying out analyses of a gas comprising one or more species by using an ion mobility spectrometer which includes a plurality of electrodes arranged in a chamber divided by an electrifiable grid into a reaction zone provided with an inlet for the gas to be analyzed and a drift zone provided with at least one ion detector. The electrodes generate at least one electric field non-uniform in space along the longitudinal axis of the chamber.

Method and apparatus for carrying out Ion mobility spectrometry analyses

A method for the quantitative analysis of the impurities content in nitrogen, hydrogen or oxygen by means of ion mobility spectrometry is described. The method involves using pure argon or a mixture, having no impurities, containing argon and the gas to be analyzed, as a counterflow gas in the separation zone of the ion mobility spectrometer.

Method for measuring the concentration of impurities in nitrogen, hydrogen and oxygen by ion mobility spectrometry

A method is provided for measuring by ionization mobility spectrometry (IMS) relatively high concentrations of water in argon, hydrogen, nitrogen and/or helium, including the following steps: (a) introducing the gas to be analyzed into an IMS instrument with a counter-flow of pure gas; (b) obtaining a signal variable over time and proportional to the number of ions detected by an ion detector of the IMS instrument; (c) determining two time intervals (A, B) corresponding to the drift times in the IMS instrument of the HOand (HO)ions; (d) obtaining the peaks of the signal in the two determined time intervals (A, B); and (e) calculating the water concentration in the gas to be analyzed according to the ratio between the intensity of the two peaks obtained in the signal.

Method for measuring the concentration of water in argon, hydrogen, nitrogen and helium by ionization mobility spectrometry

A method is provided for the quantitative analysis by ion mobility spectrometry of the concentration of carbon monoxide, methane and higher hydrocarbon species in an oxygen stream. The method includes converting these species present in the oxygen stream into carbon dioxide, measuring the concentration of the carbon dioxide, and deducing from this measurement the initial concentration of the oxidizable species.

Method for measuring total concentration of carbon monoxide and hydrocarbons in oxygen by ion mobility spectrometry

A method for carrying out nitrogen analysis by ionization mobility spectroscopy at concentrations of few parts per billion (ppb) in argon is described. The method involves the addition of hydrogen in concentration of at least 5 ppb and lower than 100 parts per million (ppm) to the argon to be analyzed; the hydrogen addition step may be preceded by a purification operation of the argon flow to reduce the total concentration of impurities other than nitrogen to under 1 ppb.

Growing community of inventors

Milan, Italy

Luca Pusterla