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oai:uvadoc.uva.es:10324/826222026-02-06T20:00:37Zcom_10324_1134com_10324_931com_10324_894col_10324_1213

UVaDOC author Mateo‐Vivaracho, Laura author Cacho, Juan author Ferreira, Vicente 2026-02-06T12:31:16Z 2026-02-06T12:31:16Z 2009 J. Sep. Sci. 2009, 32, 3845–3853 1615-9306 https://uvadoc.uva.es/handle/10324/82622 10.1002/jssc.200900296 3845 21 3853 Journal of Separation Science 32 1615-9314 A general procedure for the selective preconcentration and puriﬁcation of mercaptans has been developed. Mercaptans are strongly retained in a small (20 mg) SPE cartridge containing p-hydroxymercurybenzoate. The cartridge can then be rinsed with relatively high volumes of polar (water/methanol mixtures) and non-polar (pentane or pentane/ether mixtures) rinsing solutions to remove nearly all volatile compounds lacking a thiol functionality. Retained analytes are further eluted with a small volume of an organicsolvent containing 1,4-dithioerythritol. Some basic aspects of the strategy, such as theretention of p-hydroxymercurybenzoate in the sorbent and its stability versus differentrinsing and eluting systems, have been studied in depth. Light sulfur compounds contained in water or wine, including mercaptans such as methanethiol or thioethers, such as diethyl sulﬁde, can be quantitatively extracted, although only mercaptans can be quantitatively recovered if a polar rinsing is applied. The strategy has been applied to the GC-MS quantitative determination of some trace polyfunctional mercaptans that are key aromas in wine, such as 2-methyl-3-furanthiol, 2-furfurylthiol, 4-mercapto-4-methyl-2-pentanone, 3-mercaptohexyl acetate or 3-mercaptohexanol. The developed method reaches detection limits in the ng/L range and has a satisfactory analytical behavior, being quite simple and fast. eng Attribution-NonCommercial-NoDerivatives 4.0 Internacional Selective preconcentration of volatile mercaptans in small SPE cartridges: Quantitative determination of trace odor‐active polyfunctional mercaptans in wine info:eu-repo/semantics/article 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URL https://uvadoc.uva.es/bitstream/10324/82622/1/J%20of%20Separation%20Science%20-%202009%20-%20Mateo%e2%80%90Vivaracho%20-%20Selective%20preconcentration%20of%20volatile%20mercaptans%20in%20small%20SPE.pdf File MD5 d62f3ec45740d4c99431f09229ffa6df 286135 application/pdf J of Separation Science - 2009 - Mateo‐Vivaracho - Selective preconcentration of volatile mercaptans in small SPE.pdf