Artículos de revistas
High-performance Liquid Chromatographic Stationary Phases Based On Poly(methyloctylsiloxane) Immobilized On Silica. Ii. Chromatographic Evaluation.
Registro en:
Journal Of Chromatography. A. v. 948, n. 1-2, p. 109-19, 2002-Mar.
0021-9673
12831188
Autor
Tonhi, Edivan
Collins, Kenneth E
Collins, Carol H
Institución
Resumen
This work describes the chromatographic characterization of stationary phases prepared by deposition of poly(methyloctylsiloxane) (PMOS) on silica followed by immobilization using one of several different processes: thermal treatments (120 or 220 degrees C for 4 h), microwave irradiation (495 W for 15 min), gamma radiation (dose of 80 kGy) or self-immobilization. This evaluation was based on the chromatographic parameters of several test solutes. The stationary phases immobilized at 220 degrees C and which underwent self-immobilization were not appropriate for chromatographic use but the other immobilized phases presented chromatographic performances similar in most respects to a commercial phase (Rainin C8) while the peak characteristics of the basic probe were significantly better with these phases. 948 109-19