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Rodríguez Bencomo, Juan José Conde, José García-Montelongo, Francisco Pérez Trujillo, Francisco Javier 2024-01-15T11:14:58Z 2024-01-15T11:14:58Z 2003 Rodrı́guez-Bencomo, Juan J., et al. «Determination of Major Compounds in Sweet Wines by Headspace Solid-Phase Microextraction and Gas Chromatography». Journal of Chromatography A, vol. 991, n.o 1, marzo de 2003, pp. 13-22. https://doi.org/10.1016/S0021-9673(03)00211-5. 0021-9673 10.1016/S0021-9673(03)00211-5 https://hdl.handle.net/20.500.14352/93030 https://doi.org/10.1016/S0021-9673(03)00211-5 Headspace solid-phase microextraction (HS-SPME) was studied by high resolution gas chromatographic analysis of major compounds (ethyl acetate, methanol, 1-butanol, 2-butanol, 1-propanol, isobutanol, 2-methyl-1-butanol and 3-methyl-1- butanol) in sweet wines. Five different SPME fibres were tested and the influence of different factors such as temperature and time of desorption, extraction time, stirring, sample and vial volume, sugar and ethanol content were studied and optimized using model solutions. The SPME method was validated with the direct injection method. The proposed HS-SPME–GC method is an appropriate technique for the quantitative analysis of the mentioned analytes in real sweet wines eng restricted access Determination of major compounds in sweet wines by headspace solid-phase micro-extraction and gas chromatography journal article