Bioanalytical liquid chromatography tandem mass spectrometry methods on underivatized silica columns with aqueous/organic mobile phases
This review article summarizes the recent progress on bioanalytical LC–MS/MS methods using underivatized silica columns and aqueous/organic mobile phases. Various types of polar analytes were extracted by using protein precipitation (PP), liquid/liquid extraction (LLE) or solid-phase extraction (SPE...
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Published in | Journal of Chromatography B Vol. 796; no. 2; pp. 209 - 224 |
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Main Author | |
Format | Book Review Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
05.11.2003
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | This review article summarizes the recent progress on bioanalytical LC–MS/MS methods using underivatized silica columns and aqueous/organic mobile phases. Various types of polar analytes were extracted by using protein precipitation (PP), liquid/liquid extraction (LLE) or solid-phase extraction (SPE) and were then analyzed using LC–MS/MS on the silica columns. Use of silica columns and aqueous/organic mobile phases could significantly enhance LC–MS/MS method sensitivity, due to the high organic content in the mobile phase. Thanks to the very low backpressure generated from the silica column with low aqueous/high organic mobile phases, LC–MS/MS methods at high flow rates are feasible, resulting in significant timesaving. Because organic solvents have weaker eluting strength than water, direct injection of the organic solvent extracts from the reversed-phase solid-phase extraction onto the silica column was possible. Gradient elution on the silica columns using aqueous/organic mobile phases was also demonstrated. Contrary to what is commonly perceived, the silica column demonstrated superior column stability. This technology can be a valuable supplement to the reversed-phase LC–MS/MS. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 |
ISSN: | 1570-0232 1873-376X |
DOI: | 10.1016/j.jchromb.2003.08.026 |