High Performance Micro Gas Chromatography Column Using Mesoporous Silica as Stationary Phase

Publication date: June 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 6Author(s): Xue-Lei YANG, Bin ZHAO, Fei FENG, Hai-Mei ZHOU, Heng YANG, Xin-Xin LIAbstractA semi-packed micro gas chromatography (μGC) column embedded micro-elliptical pillars was fabricated based on micro- electro-mechanical system (MEMS) technique. The mesoporous silica (MS) film with 2-nm pore size and large specific surface area was coated on the inner surface of the μGC column as stationary phase. A baseline separation of alkanes (C5–C10) was realized by the μGC column which used MS as stationary phase, and the resolution of pentane and solvent (impurity) was as large as 3.6. Compared with the μGC column which used polydimethylsiloxane (PDMS) as stationary phase under the same injection volume, the number of theoretical plates of octane had a 46% increase and reached up to 14458 plates. Meanwhile, the peak area of nonane was increased by 349.8%.Graphical AbstractFENG et al fabricated a micro-fabricated semi-packed gas chromatography (μGC) column embedded micro-elliptical pillars with mesoporous silica film (MS) as stationary phase. Compared with the μGC column using polydimethylsiloxane (PDMS) as stationary phase, the baseline separation of alkanes (C5–C10) could be realized by using this column, and the number of theoretical plates of octane had a 46% increase and reached up to 14458 plates. Meanwhile, the peak area of nonane had a 349.8% increase.

Source: Chinese Journal of Analytical Chemistry - June 12, 2019 Category: Chemistry Source Type: research