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Liquid–gas–liquid technique for microextraction and preconcentration of short chain fatty acids from aqueous samples

✍ Scribed by Mir Ali Farajzadeh; Arsalan Assadi

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
679 KB
Volume
32
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

In this study, an organic solvent‐free microextraction technique termed liquid–gas–liquid microextraction (LGLME) was applied for cleanup and preconcentration of volatile short chain fatty acids in beverages and dairy products. Various parameters affecting the extraction efficiency such as extraction time, stirring speed, sodium chloride content, concentration and volume of donor and acceptor phases, and extraction temperature were studied. Repeatability (RSD, 4.2–8.5%), correlation coefficients (0.998–0.999), LODs (10–20 μg/L) and enrichment factors (152–249) were also investigated. Recoveries were achieved in the range of 90–102% in different matrices. The presented method was applied for the analysis of target analytes in some samples such as grape juice, vinegar and dairy products.

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