Mass analysis with alternating bypass of a fragmentation device

Details Mass analysis with alternating bypass of a fragmentation device Mass analysis with alternating bypass of a fragmentation device

2008-11-17

2010-12-14

Vanore, David A (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S281000, C250S282000, C250S284000, C250S286000, C250S290000

Reexamination Certificate

active

07851751

ABSTRACT:
A method for analyzing a mixture of components includes forming precursor ions from the components, alternately causing the precursor ions to pass to and to by-pass a fragmentation device, to form product ions from the precursor ions that pass to the device and to form substantially fewer product ions from precursor ions that by-pass the device, and obtaining mass spectra from product ions received from the device and from precursor ions that by-passed the device. An apparatus for analyzing a sample includes an ion source for forming precursor ions from the components of the sample, a fragmentation device for forming product ions from the precursor ions, a by-pass device disposed upstream of the fragmentation device for switchable by-pass of the fragmentation device, and a mass analyzer.

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