Title:
COMBINED CHEMICAL/BIOLOGICAL AGENT MASS SPECTROMETER DETECTOR
Document Type and Number:
WIPO Patent Application WO2004040612
Kind Code:
A3
Abstract:
A mass spectrometer (80) including an ion source (82) , a detector (84), a first end cap electrode (86) arranged proximate to the ion source (82), a second end cap electrode (87) arranged proximate the detector (84), and a ring electrode (88) arranged between the first and the second end cap electrodes (86, 87). The ring electrode (88) can be either connected to a radio-frequency voltage source (90) or to a constant voltage source (92). When the ring electrode (88) is connected to the radio-frequency voltage source (90) the first end cap (86), the second end cap (87) and the ring electrode form an ion trap (89) and the mass spectrometer (80) operates as an ion trap mass spectrometer. When the ring electrode (88) is connected to a constant voltage source (92), the mass spectrometer (80) operates as a time-of-flight mass spectrometer.
Inventors:
COTTER ROBERT J (US)
Application Number:
PCT/US2003/010815
Publication Date:
August 05, 2004
Filing Date:
April 09, 2003
Export Citation:
Assignee:
UNIV JOHNS HOPKINS (US)
COTTER ROBERT J (US)
COTTER ROBERT J (US)
International Classes:
B01D59/44; H01J49/16; H01J49/40; H01J49/42; H01J; (IPC1-7): B01D59/44
Foreign References:
| US20020145109A1 | 2002-10-10 | |||
| US20020190206A1 | 2002-12-19 | |||
| US20030122070A1 | 2003-07-03 |
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