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|Type:||Artigo de evento|
|Title:||Development Of C8 Stationary Phases Immobilized By γ Radiation On Zirconized Silica For High-performance Liquid Chromatographic Applications|
|Author:||Costa Melo L.F.|
|Abstract:||Modification of 10 μm irregular silica with zirconium, followed by poly(methyloctylsiloxane) coating and γ irradiation may overcome limitations presented by silica supports used for preparing reversed phases. Irradiated modified stationary phases showed better chromatographic performance than unmodified silica phases. An increase in efficiency values and excellent peak symmetries for a test mixture of neutral compounds was obtained. The analysis of a basic mixture also presented peaks with good resolution, efficiency and symmetry. These results can be attributed to a less active support as well as poly(methyloctylsiloxane) chain cross-linking, giving stationary phases with better retention capability and columns with high chromatographic performance. Copyright (C) 1999 Elsevier Science B.V.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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