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Two-dimensional gas chromatography for determination of volatile compounds in ambient air

✍ Scribed by Berg, S. ;Jonsson, A.

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
691 KB
Volume
7
Category
Article
ISSN
0935-6304

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✦ Synopsis

A two-diemnsional gaschromatograph is described for the analysis of volatile compounds. The chromatographic system consists of two separate chromatographs linked together with an interface containing an intermediate trap. The trap is cooled with nitrogen (-150OC) and a cryogradient is created inside the trap enclosure. The sample is reinjected during controlled (chromatographic) conditions, using thermostated air. The sample components are eluted from the trap as narrow symmetrical peaks; theshapeand widthof the peakseluted do not noticeably affect the subsequent chromatography. The enrichment of n- butane in the trap is quantitative in the range lo-''g.

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