Single-jet, single-stage cryogenic modulator for comprehensive two-dimensional gas chromatography (GC × GC)

A simple, single-stage CO2 jet modulator has been designed, which cools only a single, ca. 10 mm long section of the front part of the second-dimension column of a comprehensive two-dimensional gas chromatographic (GC x GC) system. Direct heating by means of the GC oven air effects remobilization of...

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Bibliographic Details
Published in:Analyst (London) 2003-03, Vol.128 (3), p.213-216
Main Authors: ADAHCHOUR, M, BEENS, J, BRINKMAN, U. A. Th
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Food Analysis
Gas chromatographic methods
Gas Chromatography-Mass Spectrometry - instrumentation
Gas Chromatography-Mass Spectrometry - methods
Humans
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Description
Summary:A simple, single-stage CO2 jet modulator has been designed, which cools only a single, ca. 10 mm long section of the front part of the second-dimension column of a comprehensive two-dimensional gas chromatographic (GC x GC) system. Direct heating by means of the GC oven air effects remobilization of the small fractions trapped upon eluting from the first-dimension column within a predetermined short period of time. Evaluation of the present modulator for the GC x GC separation of (very) polar flavour as well as non-polar compounds shows that the analytical performance of the single-stage modulator is closely similar to that of earlier reported, more complex, types of modulator.
ISSN:0003-2654
1364-5528
DOI:10.1039/b212657p