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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | El-Debs, R. Marechal, A. Dugas, V. Demesmay, C. |
| Description | Country affiliation: France Author Affiliation: El-Debs R ( Université de Lyon, Université Claude Bernard Lyon I, Institut des Sciences Analytiques, UMR CNRS 5280, 5, rue de la DOUA, 69100 Villeurbanne, France.); Marechal A ( Université de Lyon, Université Claude Bernard Lyon I, Institut des Sciences Analytiques, UMR CNRS 5280, 5, rue de la DOUA, 69100 Villeurbanne, France.); Dugas V ( Université de Lyon, Université Claude Bernard Lyon I, Institut des Sciences Analytiques, UMR CNRS 5280, 5, rue de la DOUA, 69100 Villeurbanne, France.); Demesmay C ( Université de Lyon, Université Claude Bernard Lyon I, Institut des Sciences Analytiques, UMR CNRS 5280, 5, rue de la DOUA, 69100 Villeurbanne, France.) |
| Abstract | A simple, rapid and localizable photochemical process for the preparation of hydrophilic coated capillary and silica-based monolithic capillary columns is described. The process involves the free radical polymerization of acrylamide monomers onto acrylate pre-activated silica surface triggered by UV photoinitiation. The experimental conditions (monomer content, time of irradiation) were optimized on silica monolithic columns by monitoring the evolution of the chromatographic properties (retention, permeability, efficiency) in HILIC mode using a set of nucleosides as test solutes. Compared to thermal polymerization process, the photoinitiation allows the preparation of highly retentive and efficient HILIC monolithic columns in less than 10min of irradiation. This process was then successfully applied to the surface coating of fused silica capillary walls. In addition to its relative high stability and ability to reduce the electroosmotic flow, this polyacrylamide coating is localizable. Benefits of this localizable photochemical process are highlighted through the conception of an in-line integrated bimodal microseparation tool combining a SPE preconcentration step on a photografted silica monolith and an electrokinetic separation step in a polyacrylamide photopolymerized capillary section. Two neuropeptides are used as model solutes to illustrate the suitability of this approach. |
| ISSN | 00219673 |
| Volume Number | 1326 |
| e-ISSN | 18733778 |
| Journal | Journal of Chromatography A |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-01-24 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Acrylamide Chemistry Acrylic Resins Silicon Dioxide Radiation Effects Chromatography, Liquid Electrophoresis, Capillary Enkephalin, Leucine Analysis Enkephalin, Methionine Hydrophobic And Hydrophilic Interactions Nucleosides Polymerization Ultraviolet Rays Journal Article Discipline Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Medicine Analytical Chemistry Biochemistry |
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