Chemists from the University of North Dakota (Grand Forks, North Dakota) used solid-phase microextraction (SPME) to extract aldehydes from an aqueous solution. They evaluated several SPME techniques, including headspace extraction, liquid-phase extraction, and on-fiber derivatization. The liquid-phase SPME method was the optimal method, achieving limits of detection in the 0.1–4.4 µg/L for most of the analytes. Headspace SPME with an on-fiber derivatization was less sensitive and was unable to detect several compounds.

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Chemists from the University of North Dakota (Grand Forks, North Dakota) used solid-phase microextraction (SPME) to extract aldehydes from an aqueous solution.