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Miniaturized mass-selective detector with atmospheric pressure chemical ionization.

Authors
Type
Published Article
Journal
Journal of Chromatography B
1570-0232
Publisher
Elsevier
Publication Date
Volume
800
Issue
1-2
Pages
63–67
Identifiers
PMID: 14698237
Source
Medline

Abstract

The miniaturized mass-spectrometric detector with atmospheric pressure chemical ionization (APCI) is described. The analyzer employed in this instrument is the monopole with rod 54 mm in length and 2 mm in radius, which retains its efficiency up to 0.13 Pa ( approximately 10(-3)Torr). Together with the ion source, channeltron ion detector, radio frequency power supply and preamplifier, it is packed into a case with dimension of 185 mm x 100 mm x 70 mm. Mass spectrometer with the whole vacuum system weighs about 20 kg. In spite of low power of the vacuum system, the limit of detection at ppt level is achieved. The "strong" fragmentation mode is suggested for high-specific detection of phosphor-containing substances. The detector conforms to multicapillary column attachment.

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