Semi-rotating cryogenic modulator for comprehensive two-dimensional gas chromatography.
A laboratory-made cryogenic modulator for comprehensive two-dimensional gas chromatography (GCxGC) was constructed and evaluated. Analytes were trapped with carbon dioxide and desorbed with heated GC oven air. The GCxGC system included a non-polar first-dimension column and a semi-polar second-dimension column connected to a flame ionisation detector. A laboratory-written Matlab-based program was used for the data analysis. Peak widths at half height for n-alkanes, obtained with use of new modulator, were at narrowest 60 ms.
Kallio
Minna
M
Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland.
Hyötyläinen
Tuulia
T
Jussila
Matti
M
Hartonen
Kari
K
Palonen
Sami
S
Shimmo
Masahiko
M
Riekkola
Marja-Liisa
ML