Year: 2014
Type: conference-paper
Abstract: This paper reports the development of a fully controllable micro gas chromatography (μGC) system. The system, named Zebra GC, uses a microfabricated preconcentrator (μPC) for sample collection, a microfabricated separation column with an on-chip thermal conductivity detector (μSC-TCD) for analyte separation and detection, a flow controller unit, flow and thermal management units, and user interface unit. The system has an internal flow manipulation scheme which yields sharp analyte injection from μPC to μSC-TCD with widths as narrow as 0.36 s and significantly suppresses flow variations observed by the μTCD resulting in the generation of stable chromatograms. All microfabricated components have their own on-chip heaters and sensors enabling low-power high-speed temperature control during desorption and separation phases. The performance of this ready-to-deploy Zebra GC system has been demonstrated through the analysis of a gas mixture containing aromatic volatile organic compounds (VOCs).
Authors: Apoorva Garg, Muhammad Akbar, Shree Narayanan, Leyla Nazhandali, Masoud Agah
Institution: Virginia Tech
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2016465580