Abstract— There are several methods for determining of volatile organic compounds in wine. All these sample preparation methods present several disadvantages, such as excessive cost, volume of sample and time, the possible generation of artefacts, etc. Previously developed simple method of solventless extraction of volatile organic compounds from liquid samples has been applied to wines samples. Inside needle capillary adsorption trap device (INCAT) with Carboxen 1000 as a sorbent material and wet alumina as a source of desorptive water vapour flow in a closed GC analytical system is presented. In relations to other extraction techniques used in wine analysis like liquid-liquid and solid-phase extraction, purge-and-trap, and solid-phase microextraction, the INCAT technique offers some advantages because it does not require solvent or any sample treatment, is fast, inexpensive, requires low sample volumes. The analytical characteristics of developed device and of compared purge-and-trap device for analysed samples are similar; the limits of detection as well as quantification are approx. 1 ng/l. The main advantage of INCAT device lies mainly in substantially lower price of analysis and the possibility of sampling directly in the field.
Keywords— GC-MS, needle concentrator INCAT, wine
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