Mass spectrometer

Details Mass spectrometer Mass spectrometer

2006-05-09

2006-05-09

Nguyen, Kiet T. (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S42300F, C250S281000, C250S282000

Reexamination Certificate

active

07041972

ABSTRACT:
An Atmospheric Pressure Chemical Ionisation ion source is disclosed wherein the current applied to a corona needle2is repeatedly varied between two or more settings during a single experimental run or acquisition. Two or more separate sets of mass spectral or mass analysed data are obtained. The ion source in one embodiment comprises a heated tube1arranged to discharge gas and analyte into a housing7enclosing corona needle2. The housing7comprises a gas outlet port3via which analyte ions exit. According to another embodiment the corona needle does not have to be enclosed within a housing.

REFERENCES:
patent: 6462337 (2002-10-01), Li
patent: 6737641 (2004-05-01), Kato
patent: 2 362 259 (2001-11-01), None
patent: 55046222 (1980-03-01), None
patent: 63187548 (1988-08-01), None

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