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RESEARCH PRODUCT
Liquid gas techniques for GC trace analysis
Cornelia FookenWolfgang DüngesHeinz Wagnersubject
Alkanechemistry.chemical_classificationChromatographyCapillary actionLiquid gasChemistryGeneral Chemical EngineeringAnalytical chemistrySolventchemistry.chemical_compoundBoilingGas chromatographyBar (unit)Dichloromethanedescription
Liquid gases (LG), i.e. low boiling compounds with vapor pressures below 5 bar at room temperature, are introduced as solvents for trace analyses. A system for preparin, diluting and handling LG solutions safely and conveniently in 5 to 500 μl amounts was developed as well as a syringe for direct injection of μl-LG samples into capillary GC. Even technical grade LG are of high purity. GC/FID of LG solutions (starting at −60°C) allows the separation of volatile traces from the solvent peak: e.g., dichloromethane can be measured in the picogram range.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-08-01 | Journal of High Resolution Chromatography |