Calibration of mass spectrometers for quantitative gas mixture analysis
Quantitative analysis of gas mixtures from sources external to a mass spectrometer (MS) requires vacuum hardware that systematically introduces the gas to the ionization region of the MS and calibration procedures that reflect the MS response to time dependent partial pressures in the gas source. Formalism for describing the gas flow, fractionation processes, and the ionization process is presented. Long-term sensitivity data for D/sub 2/ is presented for three types of mass spectrometers: a quadrupole, a cycloid, and a magnetic sector mass spectrometer. The use of appropriate standard gas mixtures to monitor the accuracy of the MS calibration by control chart is advocated. Bias data from control charts can be used as the basis for minor calibration adjustments rather than total recalibration.
- Research Organization:
- Monsanto Research Corporation, Mound Facility, Miamisburg, Ohio 45342
- DOE Contract Number:
- AC04-76DP00053
- OSTI ID:
- 6724489
- Journal Information:
- J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 5:1; ISSN JVTAD
- Country of Publication:
- United States
- Language:
- English
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THE USE OF THE MASS SPECTROMETER FOR THE QUANTITATIVE ANALYSIS OF MIXTURES OF AMINO ACIDS
Related Subjects
47 OTHER INSTRUMENTATION
CALIBRATION
CHEMICAL ANALYSIS
DEUTERIUM
GAS ANALYSIS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MASS SPECTROMETERS
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
NUCLEI
ODD-ODD NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
SENSITIVITY
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
VACUUM SYSTEMS