Zebra GC: A Fully Integrated Micro Gas Chromatography System

dc.contributor.authorGarg, Apoorvaen
dc.contributor.committeechairNazhandali, Leylaen
dc.contributor.committeechairAgah, Masouden
dc.contributor.committeememberMarr, Linsey C.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2016-02-21T07:00:31Zen
dc.date.available2016-02-21T07:00:31Zen
dc.date.issued2014-08-29en
dc.description.abstractA ready-to-deploy implementation of microfabricated gas chromatography (microGC) system characterized for detecting hazardous air pollutants (HAPs) at parts-per-billion (ppb) concentrations in complex mixtures has been described. A microfabricated preconcentrator (microPC), a MEMS separation column with on-chip thermal conductivity detector (microSC-TCD), the flow controller unit, and all the necessary flow and thermal management as well as user interface circuitry are integrated to realize the fully functional microGC system. The work reports extensive characterization of microPC, microSC and micro]TCD for target analytes: benzene, toluene, tetrachloroethylene, chlorobenzene, ethylbenzene, and p-xylene. Limit of Detection (LOD) of ~1 ng was achieved, which corresponds to 10 min sampling time at a flow rate of 1 mL/min for analyte present at ~25 ppbv concentration. An innovative method for generating very sharp injection plugs from the microPC even in the presence of flow sensitive detectors like micro]TCD is described. A one-to-one comparison between microGC system and conventional Automated Thermal Desorption-Gas Chromatograph-Flame Ionization Detector (ATD GC-FID) system for real gasoline samples in simulated car refueling scenario is reported.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:3528en
dc.identifier.urihttp://hdl.handle.net/10919/64854en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectMicro Gas Chromatographyen
dc.subjectEnvironmental Monitoringen
dc.subjectEmbedded Systemsen
dc.titleZebra GC: A Fully Integrated Micro Gas Chromatography Systemen
dc.typeThesisen
thesis.degree.disciplineComputer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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