EP 0294683 B1 19961023 - Method for recording ICR mass spectra and ICR mass spectrometer developed for performance of this method
Title (en)
Method for recording ICR mass spectra and ICR mass spectrometer developed for performance of this method
Title (de)
Verfahren zur Aufnahme von ICR-Massenspektren und zur Durchführung des Verfahrens ausgebildetes ICR-Massenspektrometer
Title (fr)
Procédé pour enregistrer des spectres de masse ICR et spectromètre de masse ICR dévéloppé pour réaliser le procédé
Publication
Application
Priority
DE 3719018 A 19870606
Abstract (en)
[origin: US4855593A] Ion cyclotron resonance is an important method used in mass spectroscopy. Examinations for determining the reactions between substances by means of the two-dimensional ICR method are carried out using the following measuring sequence: P1-t1-P2-Tm-P3-t2, wherein P1, P2 and P3 are rf pulses, with the rf pulses P1 and P2 having the same frequency, t1 and Tm are time intervals between the pulses and t2 is the observation time following the last pulse. This measuring sequence is repeated several times while varying t1. In this manner, a plurality of induction signals recorded during the time t2 is obtained, from which then a two-dimensional spectrum is derived by transformation from the time domain into the frequency domain. The transformation from the time domain to the frequency domain can be effected by two-dimensional Fourier transformation, or with the aid of the method of maximum entropy.
IPC 1-7
IPC 8 full level
G01N 24/14 (2006.01); G01N 27/62 (2006.01); G01R 33/64 (2006.01); H01J 49/38 (2006.01); H01J 49/44 (2006.01)
CPC (source: EP US)
H01J 49/38 (2013.01 - EP US)
Citation (examination)
- The Journal of Chemical Physics, band 71, no 11, 1 dec.1979. S. 4546-4553, J.Jeener et al.: "Investigation of exchange processes by two-dimensional NMR spectroscopy".
- J.D. Baldeschwieler und S.S.Woodgate Acc.Chem.Res. 4 (1971) S.114-120.
Designated contracting state (EPC)
CH FR GB LI
DOCDB simple family (publication)
EP 0294683 A2 19881214; EP 0294683 A3 19901227; EP 0294683 B1 19961023; DE 3719018 A1 19881222; DE 3719018 C2 19920416; JP 2666147 B2 19971022; JP H02118441 A 19900502; US 4855593 A 19890808
DOCDB simple family (application)
EP 88108648 A 19880531; DE 3719018 A 19870606; JP 13920788 A 19880606; US 19897588 A 19880526