Radiant energy – Ionic separation or analysis – Methods
Patent
1981-04-27
1983-03-22
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
Methods
250282, 250252, B01D 5944
Patent
active
043777457
ABSTRACT:
A mass spectrometer instrument for chemical analysis. An instrument of this invention is capable of performing cyclic operation repetitively and automatically. Each operation cycle consists of at least one chemical ionization operation mode and one venting operation mode. Furthermore, an instrument of this invention is capable of performing cyclic operation which includes multiple chemical ionization operation modes in which each of a plurality of reagent gases is individually employed for each chemical ionization operation mode. Electron impact ionization can also be conducted during each venting operation mode should it be desired.
Positive ion and negative ion spectra are also recorded simultaneously which further improves the efficiency of the cyclic operation.
The operation of mass spectrometry/mass spectrometry is also made possible in the mass spectrometer of this invention which further extends the capability of the mass spectrometer of this invention in achieving a more detailed sample analysis.
REFERENCES:
patent: 3307033 (1967-02-01), Vestal
patent: 3371204 (1968-02-01), Brubaker
patent: 3886365 (1975-05-01), Kruger et al.
patent: 4005291 (1977-01-01), Arsenault
patent: 4066894 (1978-01-01), Hunt
patent: 4136280 (1979-01-01), Hunt et al.
patent: 4234791 (1980-11-01), Enke et al.
patent: 4283626 (1981-08-01), Siegel
"A 15-CM Radius Mass Spectrometer Which Simultaneously Collects Positive and Negative Ions", Svec et al., Int. Jour. of Mass Spect. and Ion Physics, I (1968), pp. 41-52.
"A Triple Quadrupole Mass Spect. for Direct Mixture Anal. and Structure Elucidation", Yost et al., Anal. Chem., vol. 51, No. 12, Oct. 1979.
Simplified "Triple Quadrupole" for MS-MS, Siegel, 28th Annual Conf. on Mass Spect. and Allied Topics, May 1980, N.Y. pp. 478-480.
"An Improved Quadrupole Mass Analyzer", Brubaker, Adv. in Mass Spect., vol. 4, p. 293, (1968).
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