A 3D-printed metal column for micro gas chromatography

Lab on a Chip ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 3435-3444
Author(s):  
Sooyeol Phyo ◽  
Sung Choi ◽  
Jaeheok Jang ◽  
Sun Choi ◽  
Jiwon Lee
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Gas Mixture ◽  
Mixture Separation ◽  
Phase Coating ◽  
3D Printed ◽  
Pre Treatment

A square spiral 1 m-long column for gas mixture separation was 3D-printed out with the dimensions of 3.4 × 3.3 × 0.2, followed by pre-treatment and stationary phase coating.

scholarly journals Development of Open-Tubular-Type Micro Gas Chromatography Column with Bump Structures

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3706
Author(s):  
Lee ◽  
Lim
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Separation Efficiency ◽  
Theoretical Plate ◽  
Microfluidic Channel ◽  
Gas Analysis ◽  
Gas Mixture ◽  
Micro Electro Mechanical Systems ◽  
Medical Diagnoses ◽  
Tubular Type

Gas chromatography (GC) is the chemical analysis technique most widely used to separate and identify gas components, and it has been extensively applied in various gas analysis fields such as non-invasive medical diagnoses, indoor air quality monitoring, and outdoor environmental monitoring. Micro-electro-mechanical systems (MEMS)-based GC columns are essential for miniaturizing an integrated gas analysis system (Micro GC system). This study reports an open-tubular-type micro GC (μ-GC) column with internal bump structures (bump structure μ-GC column) that substantially increase the interaction between the gas mixture and a stationary phase. The developed bump structure μ-GC column, which was fabricated on a 2 cm × 2 cm μ-GC chip and coated with a non-polar stationary phase, is 1.5 m-long, 150 μm-wide, and 400 μm-deep. It has an internal microfluidic channel in which the bumps, which are 150 μm diameter half-circles, are alternatingly disposed to face each other on the surface of the microchannel. The fabricated bump structure μ-GC column yielded a height-equivalent-to-a-theoretical-plate (HETP) of 0.009 cm (11,110 plates/m) at an optimal carrier gas velocity of 17 cm/s. The mechanically robust bump structure μ-GC column proposed in this study achieved higher separation efficiency than a commercially available GC column and a typical μ-GC column with internal post structures classified as a semi-packed-type column. The experimental results demonstrate that the developed bump structure μ-GC column can separate a gas mixture completely, with excellent separation resolution for formaldehyde, benzene, toluene, ethylbenzene, and xylene mixture, under programmed operating temperatures.

Preparation of mixed stationary phase of cellulose and polysiloxane ionic liquid for gas chromatography

2014 ◽  
Vol 32 (10) ◽  
pp. 1117
Author(s):  
Gang CHEN ◽  
Xiaojie ZHAO ◽  
Jun XING ◽  
Yuhua YAO ◽  
Jingjing ZHENG
Keyword(s):  
Gas Chromatography ◽  
Ionic Liquid ◽  
Stationary Phase ◽  
Mixed Stationary Phase

Evaluation of "Dexsil 300 GC" as Stationary Phase in Gas Chromatography of Triiodothyronine and Thyroxine in Human Serum

1973 ◽  
Vol 19 (1) ◽  
pp. 109-112 ◽  
Author(s):  
Mohammed Tajuddin ◽  
Stanley G Elfbaum
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Human Serum ◽  
Methyl Esters ◽  
Phase Separations ◽  
Heat Stable

Abstract The N,O-dipivalyl methyl esters of triiodothyronine and thyroxine were prepared and gas chromatographed. "Dexsil 300 GC," a heat-stable polycarboranesiloxane, was used as the stationary phase. Separations were good and prompt. As little as 250 pg of triiodothyronine was detectable. Dexsil 300 GC was used satisfactorily in measuring serum triiodothyronine

A New Stationary Phase for Capillary Gas Chromatography: Calix[4]resorcinarene Functionalized with Imidazolium Cationic Units

2021 ◽  
Vol 84 (4) ◽  
pp. 325-333
Author(s):  
Xiaomin Shuai ◽  
Zhiqiang Cai ◽  
Xinyu Zhao ◽  
Yujie Chen ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Capillary Gas Chromatography ◽  
New Stationary Phase

Enantioselective Gas Chromatographic Separation of Racemic N-alkylated Barbiturates: Application of C11-Chirasil-Dex as Chiral Stationary Phase in GC

2007 ◽  
Vol 2 ◽  
pp. 117739010700200
Author(s):  
Ashraf Ghanem
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Chromatographic Separation ◽  
Chiral Stationary Phase ◽  
Enantiomeric Separation ◽  
Enantioselective Gas Chromatography ◽  
Gas Chromatographic Separation ◽  
New Stationary Phase

Chirasil-β-Dex containing an undecamethylene spacer (C11-Chirasil-Dex) was synthesized and used as chiral stationary phase (CSP) in enantioselective gas chromatography (GC). The versatility of the new stationary phase in the simultaneous enantiomeric separation of a set of N-alkylated barbiturates is demonstrated.

Metal-Organic Framework Co(D-Cam)1/2(bdc)1/2(tmdpy) for Improved Enantioseparations on a Chiral Cyclodextrin Stationary Phase in Gas Chromatography

ChemPlusChem ◽  
2014 ◽  
Vol 79 (8) ◽  
pp. 1103-1108 ◽  
Author(s):  
Hong Liu ◽  
Sheng-Ming Xie ◽  
Ping Ai ◽  
Jun-Hui Zhang ◽  
Mei Zhang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Cyclodextrin Stationary Phase ◽  
Organic Framework
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