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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Možnosti on-line spojení extrakce a chromatografie v analýze složitých vzorků
 Hyötyläinen, T. ; Lüthje, K. ; Rautiainen-Rämä, M. ; Pól, Jaroslav ; Ranta-Aho, O. ; Riekkola, M. L.
In this study, on-line methodologies have been developed both for liquid and solid food samples. For liquid samples, microporous membrane liquid-liquid extraction (MMLLE) has been combined on-line with gas chromatography (GC). This MMLLE-GC method has been applied for the determination of pesticides in wine and water. The method has been extended to the analysis of solid samples as well, by combining a pressurised hot water extraction (PHWE) to the MMLLE-GC system. The PHWE-MMLLE-GC has been applied for the analysis of pesticides in grapes. For thermally labile analytes, on-line combination of supercritical fluid extraction (SFE) and liquid chromatography has been constructed and it has been applied for the analysis of lycopene in fruits. All the method developed proved to be linear, repeatable and sensitive
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