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Atmospheric-pressure Chemical Ionization Interface for Semimicro Liquid Chromatography/Mass Spectrometry

โœ Scribed by Takayuki Nabeshima; Yasuaki Takada; Minoru Sakairi

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
171 KB
Volume
11
Category
Article
ISSN
0951-4198

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โœฆ Synopsis

An atmospheric pressure chemical ionization (APCI) interface was developed for improved sensitivity in semimicro liquid chromatography/mass spectrometry (LC/MS). This interface consists of a stainless-steel capillary inserted into a bored stainless-steel block, and includes a collision plate perforated by off-center holes and a needle to generate a corona discharge. Optimization of the temperature of the stainless-steel block and the internal volume in the interface increases the ionization efficiency. The sensitivity of a semimicro LC/MS system equipped with this APCI interface is more than one order of magnitude higher than that of a conventional LC/MS system equipped with the existing APCI interface.

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