Mass spectrometer interface

Details Mass spectrometer interface Mass spectrometer interface

2006-08-15

2006-08-15

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000

Reexamination Certificate

active

07091477

ABSTRACT:
A mass spectrometer interface, having improved sensitivity and reduced chemical background, is disclosed. The mass spectrometer interface provides improved desolvation, chemical selectivity and ion transport. A flow of partially solvated ions is transported along a tortuous path into a region of disturbance of flow, where ions and neutral molecules collide and mix. Thermal energy is applied to the region of disturbance to promote liberation of at least some of the ionized particles from any attached impurities, thereby increasing the concentration of the ionized particles having the characteristic m/z ratios in the flow. Molecular reactions and low pressure ionization methods can also be performed for selective removal or enhancement of particular ions.

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