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Title

Comprehensive two-dimensional gas chromatography with capillary flow modulation to separate FAME isomers

AuthorsManzano, Pilar; García-Viguera, Cristina ; Bernal, José Luis; Bernal, José
Issue Date2011
PublisherElsevier
CitationJournal of Chromatography A 1218(30): 4952-4959 (2011)
AbstractA method to separate FAME and the linoleic and linolenic acids isomers by GCxGC using an apparatus equipped with a capillary flow technology (CFT) based modulator and a FID detector has been developed. Four different column combinations (one conventional and three inverted phase sets) were used in these experiments. The conventional set first involved a DB5-MS non-polar column followed by a highly polar HP-INNOWax column in the second dimension. The inverted phase set comprised of a highly polar BPX-70 column in the first dimension and a non-polar ZB5-MS column for the second dimension. Furthermore, the influence of the length of the second dimension column on FAME isomer separation was studied in the inverted phase sets, along with other parameters like the modulation time and column flow. The best results in terms of the time required for the analysis and number of FAME identified with the inverted set were achieved with the shorter second dimension column. After supercritical fluid extraction, the method was applied to identify FAMEs in broccoli leaves from three different cultivars (Naxos, Nubia and Viola). © 2011 Elsevier B.V.
URIhttp://hdl.handle.net/10261/51620
DOI10.1016/j.chroma.2011.02.002
Identifiersdoi: 10.1016/j.chroma.2011.02.002
issn: 0021-9673
e-issn: 1873-3778
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