Mass spectrometer

Details Mass spectrometer Mass spectrometer

H - Electricity

01

J

H01J 49/00 (2006.01)

Patent

CA 2676181

A mass spectrometer is disclosed comprising a quadrupole rod set ion guide or mass filter device. Broadband frequency-signals (13, 14, 15) having a plurality of frequency notches (16a; 16b; 16c) are applied sequentially to the rods of the quadrupole rod set. The notched broadband frequency signals (16a, 16b, 16c) cause undesired ions to be resonantly or parametrically ejected from the ion guide. The resulting ion signals are deconvoluted to provide a mass spectrum.

L'invention concerne un spectre de masse incluant un dispositif de guide d'ions ou de filtre de masse à ensemble de tiges quadripolaires. Des signaux à fréquence large bande (13, 14, 15) munis d'une pluralité d'encoches de fréquence (16a; 16b; 16c) sont appliqués de façon séquentielle aux tiges de l'ensemble de tiges quadripolaires. Les signaux à fréquence large bande à encoches (16a, 16b, 16c) amènent des ions non désirés à être éjectés par résonance ou de façon paramétrique à partir du guide d'ions. Les signaux d'ion résultants sont déconvolutionnés pour fournir un spectre de masse.

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