Carbon nanotube electron ionization source for portable mass spectrometry

Theresa Evans-Nguyen; Charles B. Parker; Christina Hammock; Andrew H. Monica; Elena Adams; Luann Becker; Jeffrey T. Glass; Robert J. Cotter

doi:10.1021/ac200643m

Carbon nanotube electron ionization source for portable mass spectrometry

Theresa Evans-Nguyen, Charles B. Parker, Christina Hammock, Andrew H. Monica, Elena Adams, Luann Becker, Jeffrey T. Glass, Robert J. Cotter

School of Medicine

Research output: Contribution to journal › Article › peer-review

Abstract

Cold cathode carbon nanotubes (CNTs) are used in a low-voltage quadrupole ion trap mass spectrometer and shown to be a viable low-power alternative to filament sources for portable mass spectrometry instrumentation. No heating is necessary, and the power consumption depends only on the switching characteristics of the electronics. The CNT electron sources are mounted directly in the ring electrode, and their performance is compared directly with a filament source also mounted in the ring electron. Up to a 5 × 10 ^-4 Torr CO ₂ environment, reflecting conditions expected during operation in a Mars atmosphere, the CNT emitters may provide up to 1 μA of current over more than 200 h.

Original language	English (US)
Pages (from-to)	6527-6531
Number of pages	5
Journal	Analytical chemistry
Volume	83
Issue number	17
DOIs	https://doi.org/10.1021/ac200643m
State	Published - Sep 1 2011

ASJC Scopus subject areas

Analytical Chemistry

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10.1021/ac200643m

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abstract = "Cold cathode carbon nanotubes (CNTs) are used in a low-voltage quadrupole ion trap mass spectrometer and shown to be a viable low-power alternative to filament sources for portable mass spectrometry instrumentation. No heating is necessary, and the power consumption depends only on the switching characteristics of the electronics. The CNT electron sources are mounted directly in the ring electrode, and their performance is compared directly with a filament source also mounted in the ring electron. Up to a 5 × 10 -4 Torr CO 2 environment, reflecting conditions expected during operation in a Mars atmosphere, the CNT emitters may provide up to 1 μA of current over more than 200 h.",

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AU - Evans-Nguyen, Theresa

AU - Parker, Charles B.

AU - Hammock, Christina

AU - Monica, Andrew H.

AU - Adams, Elena

AU - Becker, Luann

AU - Glass, Jeffrey T.

AU - Cotter, Robert J.

PY - 2011/9/1

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N2 - Cold cathode carbon nanotubes (CNTs) are used in a low-voltage quadrupole ion trap mass spectrometer and shown to be a viable low-power alternative to filament sources for portable mass spectrometry instrumentation. No heating is necessary, and the power consumption depends only on the switching characteristics of the electronics. The CNT electron sources are mounted directly in the ring electrode, and their performance is compared directly with a filament source also mounted in the ring electron. Up to a 5 × 10 -4 Torr CO 2 environment, reflecting conditions expected during operation in a Mars atmosphere, the CNT emitters may provide up to 1 μA of current over more than 200 h.

AB - Cold cathode carbon nanotubes (CNTs) are used in a low-voltage quadrupole ion trap mass spectrometer and shown to be a viable low-power alternative to filament sources for portable mass spectrometry instrumentation. No heating is necessary, and the power consumption depends only on the switching characteristics of the electronics. The CNT electron sources are mounted directly in the ring electrode, and their performance is compared directly with a filament source also mounted in the ring electron. Up to a 5 × 10 -4 Torr CO 2 environment, reflecting conditions expected during operation in a Mars atmosphere, the CNT emitters may provide up to 1 μA of current over more than 200 h.

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Carbon nanotube electron ionization source for portable mass spectrometry

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