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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Weed, Anna-Marie Karen Dvornik, Jill Stefancin, John Jacob Gyapong, Afua Asantewaa Svec, Frantisek Zajickova, Zuzana |
| Description | Country affiliation: United States Author Affiliation: Weed AM ( Department of Physical Sciences, Barry University, Miami Shores, FL 33161, USA.) |
| Abstract | Porous hybrid organo-silica monoliths have been prepared inside pretreated 100 µm id UV transparent fused-silica capillaries using simultaneous sol-gel transition and polymerization of 3-(methacryloyloxy)propyl trimethoxysilane in the presence of toluene as a porogen. The sol-gel reaction was catalyzed by hydrochloric acid while various photoinitiators including azobisisobutyronitrile, 2,2-dimethoxy-2-phenylacetophenone, and Irgacure 819 were used for the photopolymerization carried out under irradiation with UV light at a wavelength of 254 or 365 nm. The chromatographic performance of photopolymerized monolithic columns in RP liquid chromatographic mode was assessed with respect to the following metrics: column efficiency, methylene and steric selectivity, effect of silanol groups, van Deemter plot, permeability, and pore size distribution. Columns with an efficiency of up to 77 000 plates/m for benzene has been achieved at a flow velocity of 0.47 mm/s. The performance of photopolymerized hybrid monolithic column was compared to the performance of columns prepared via thermally initiated polymerization. |
| File Format | HTM / HTML |
| ISSN | 16159306 |
| Issue Number | 2 |
| Journal | Journal of Separation Science |
| Volume Number | 36 |
| e-ISSN | 16159314 |
| Language | English |
| Publisher | Wiley-VCH |
| Publisher Date | 2013-01-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Filtration and Separation |
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