Interpretation of mass spectra of multiply charged ions of mixtu

Details Interpretation of mass spectra of multiply charged ions of mixtu Interpretation of mass spectra of multiply charged ions of mixtu

1990-12-14

1991-12-10

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

250282, 2502521, B01D 5944, H01J 4900

Patent

active

050721151

ABSTRACT:
A chemical mixture is conveyed to a multiple charging apparatus, where multiply charged ions are formed. The multiply charged ions are then conveyed to a mass spectrometer which generates mass/charge spectrum data relating intensity to a range of mass/charge values. This mass/charge spectrum data is transformed to generate mass spectrum data relating intensity to a range of mass values. Thereafter, a set of known masses are identified from the mass spectrum data by associating each peak intensity value in the spectrum with its molecular mass. Then a list of mass/charge ratios for each of the identified masses is formed and stored. Next, a range of mass/charge ratios for each mass value of the mass spectrum data is computed. Identification spectrum data is then computed by assigning a value to the identification spectrum from the mass/charge spectrum data: (1) for mass/charge spectrum data corresponding to known masses; and (2) for mass/charge spectrum data which does not correspond to known masses and which does not correspond to a value in the list. Mass values associated with peak intensity values of the resultant identification spectrum are then identified and added to the a list of the known mass values. These steps are repeated under computer control to identify a plurality of mass values.

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