Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2012.01.044 View full text
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I. Carpinteiro, B. Abuín, I. Rodríguez, M. Ramil, R. Cela

Abstract: Selectivity of mixed-mode solid-phase extraction (SPE) was combined with the concentration power of dispersive liquid-liquid microextraction (DLLME) to obtain a sensitive, low solvent consumption method for gas chromatography-mass spectrometry determination of ethylphenol off-flavours (4-ethylphenol, EP; 4-ethylguaicol, EG and 4-ethylcathecol, EC) in complex red wine samples. Under optimized conditions, limits of quantification (LOQs) between 0.3 and 0.8 ng mL(-1) were obtained using just 5 mL of wine and 0.06…

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