1. Sputtered alumina as a novel stationary phase for micro machined gas chromatography columns.
- Author
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Haudebourg, R., Matouk, Z., Zoghlami, E., Azzouz, I., Danaie, K., Sassiat, P., Thiebaut, D., and Vial, J.
- Subjects
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STATIONARY phase (Chromatography) , *ALUMINUM oxide , *SPUTTERING (Physics) , *SILICA , *THEORETICAL plate number - Abstract
Silica and graphite sputtering have previously been reported as novel solid stationary phase deposition techniques for micro gas chromatography columns. As a conventional solid stationary phase in gas chromatography, compatible with sputtering yet so far unreported, alumina was evaluated in this study. Alumina sputtered semi-packed micro columns were fabricated (including an activation step) and proved able to separate a mixture of volatile alkanes (C-C with isomers) in less than 1 min. Kinetic and a thermodynamic evaluation led to calculation of 4,500 theoretical plates for ethane in 1.1 m (HETP = 250 μm) and a Gibbs free energy for propane of 30.2 kJ mol, making this stationary phase's properties very close to those observed with silica-sputtered micro columns. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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