|Title:||Up-and-down-shaker-assisted dispersive liquid-liquid microextraction coupled with gas chromatography-mass spectrometry for the determination of fungicides in wine||Authors:||Chu, Shang-Ping
|Keywords:||Up-and-down-shaker-assisted dispersive liquid-liquid microextraction (UDSA-DLLME);Fungicides;Gas chromatography;Improved solvent collection system;Wine||Issue Date:||2015||Journal Issue:||185||Start page/Pages:||377-382||Source:||Food Chem.||Abstract:||
An up-and-down-shaker-assisted dispersive liquid-liquid microextraction (UDSA-DLLME) method coupled with gas chromatography-mass spectrometry was developed for the determination of fungicides (cyprodinil, procymidone, fludioxonil, flusilazole, benalaxyl, and tebuconazole) in wine. The developed method requires 11 mu L of 1-octanol without the need for dispersive solvents. The total extraction time was approximately 3 min. Under optimum conditions, the linear range of the method was 0.05-100 mu g L-1 for all fungicides and the limit of detection was 0.007-0.025 mu g L-1. The absolute and relative recoveries were 31-83% and 83-107% for white wine, respectively, and 32-85% and 83-108% for red wine, respectively. The intra-day and inter-day precision were 0.5-7.5% and 0.7-6.1%, respectively. Our developed method had good sensitivity and high extraction efficiency. UDSA-DLLME is a desirable method in terms of performance and speed. (C) 2015 Elsevier Ltd. All rights reserved.
|Appears in Collections:||法醫學科所|
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