Abstract
A laboratory-made cryogenic modulator for comprehensive two-dimensional gas chromatography (GC×GC) was constructed and evaluated. Analytes were trapped with carbon dioxide and desorbed with heated GC oven air. The GC×GC 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.
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T.H. and K.H. gratefully acknowledge the Academy of Finland for financial support (Project No 48865 and 48867) as well as Karri Saarnio for his assistance.
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Kallio, M., Hyötyläinen, T., Jussila, M. et al. Semi-rotating cryogenic modulator for comprehensive two-dimensional gas chromatography. Anal Bioanal Chem 375, 725–731 (2003). https://doi.org/10.1007/s00216-003-1803-7
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DOI: https://doi.org/10.1007/s00216-003-1803-7