期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1086, 期 1-2, 页码 91-98出版社
ELSEVIER
DOI: 10.1016/j.chroma.2005.06.017
关键词
comprehensive two-dimensional liquid chromatography; triacylglycerols; TAG; APCI-MS
The triacylglycerol (TAG) profiles present in real world lipidic samples are usually quite complex and, as such, monodimensional high-performance liquid chromatographic (HPLC) techniques are inadequate when challenged with such matrices. In this respect, the complementary use of silver-ion (Ag) and non-aqueous (NA) reversed-phase (RP) HPLC can be exploited if thorough TAG separations are required. The present investigation reports the employment of a newly developed comprehensive LC (LC x LC) system, based on the different separation mechanisms of the aforementioned techniques, and applied to a rice oil sample. The approach was successful in the separation of a high number of solutes, otherwise unachievable through monodimensional LC. Furthermore, the use of atmospheric pressure chemical ionization mass spectrometry (APCI-MS), as detection system, provided a third analytical dimension boosting the identification power of the comprehensive chromatographic method. (c) 2005 Elsevier B.V. All rights reserved.
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