Voorbeelden van mass spectrometer

• The analysis of products was performed using a gas chromatograph coupled to an infrared detector and a quadrupole mass spectrometer.

• The argon analysis was performed using the isotope dilution procedure on a noble gas mass spectrometer in duplicate.

• The mass spectrometer was used in static multi-collector mode for this study.

• The evolved gases are analysed by a mass spectrometer.

• Individual oligomers produced in heating experiments on urea-amino acid mixtures were analysed using a liquid chromatograph mass spectrometer.

• The diagnostic systems consisted of an electrostatic mass spectrometer and an ion collector.

• The same mass spectrometer is also able to detect negative ions resulting from a proton subtraction.

• The gas generated at each temperature will be analysed by the mass spectrometer.

• Corrections were made for irradiation interference reactions and mass spectrometer discrimination.

• This mass spectrometer will also study other elements and look for methane in samples of the atmosphere.

• Time-of-flight mass spectrometer and multiple-coincidence techniques are introduced which are the basic tools to study the fragmentation process on a femtosecond time scale and to distinguish among the multiple-fragmentation channels.

• The fine spray enters the heated capillary and the fine droplets evaporate leaving a beam of macromolecules to enter the mass spectrometer through two differentially pumped chambers.

• Naturally, the experimental set-up used at that time did not permit the isolation of the carbon radicals, which were produced just in sufficient quantities to feed a mass spectrometer.

• That requires capability for connecting the mass spectrometer to a gas liquid chromotograph, as well as a high performance liquid chromatograph.

• A mass spectrometer is the only available technique that fulfils the necessary criterion for a primary reference standard.