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Modified semi-rotating cryogenic modulator for comprehensive two-dimensional gas chromatography

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Abstract

A previously constructed semi-rotating cryogenic modulator was modified for comprehensive two-dimensional gas chromatography (GC×GC). The retention time repeatability was improved by replacing the modulator control program unit with a new system. Peak widths obtained with the modified modulator were comparable with those obtained with the previous modulator and other modulator types. The modulator was easy to construct and it can be installed in any commercial GC system. The constructed GC×GC–FID system and data obtained by gas chromatography–mass spectrometry (GC–MS) were used for identification of unknowns in forest aerosol samples.

A semi-rotating cryogenic modulator in which modulation is based on two-step cryogenic trapping with continuously flowing carbon dioxide has been developed for comprehensive two-dimensional gas chromatography

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Acknowledgements

Funding was provided by the Academy of Finland, the Maj and Tor Nessling Foundation, and the Kordelin Foundation. Taija Rissanen is thanked for assistance in the laboratory.

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Authors and Affiliations

  1. Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, 00014, Helsinki, Finland

    Minna Kallio, Matti Jussila, Päivi Raimi & Tuulia Hyötyläinen

Authors
  1. Minna Kallio
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  2. Matti Jussila
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  3. Päivi Raimi
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  4. Tuulia Hyötyläinen
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Corresponding author

Correspondence to Tuulia Hyötyläinen.

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Kallio, M., Jussila, M., Raimi, P. et al. Modified semi-rotating cryogenic modulator for comprehensive two-dimensional gas chromatography. Anal Bioanal Chem 391, 2357–2363 (2008). https://doi.org/10.1007/s00216-008-2122-9

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  • DOI: https://doi.org/10.1007/s00216-008-2122-9

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