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RESEARCH PRODUCT
Recent Development in Analytical Methods for Identification of Off-Flavour Compounds
Raija PaukkuMirja LahtiperäJaakko PaasivirtaH KääriäinenAnja Veijanensubject
Environmental EngineeringChromatographyResolution (mass spectrometry)Off-flavourChemistryElectron captureAnalytical chemistryMass spectrometrylaw.inventionAdsorptionlawDesorptionFlame ionization detectorWater Science and TechnologyCold trapdescription
The best resolution of individual off-flavour compounds is achieved by glass or quartz capillary gas chromatography. A special two-column system was used by which simultaneous instrumental detection and sniffing (odour desorption) of odorous compounds could be done. The measuring detectors were flame ionization (FID), electron capture (ECD), flame photometric (FPD) and a mass spectrometer (MS). Structural assignments of the odorous substances were done from MS data and verified by model compounds. Before the GC run the sample was collected at the head of the double column using a cold trap device. The sample for analysis was injected in liquid form or, more efficiently, thermally desorbed from an adsorption tube or from different headspace devices with the cold trap on.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1983-06-01 | Water Science and Technology |