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dc.contributor.authorHasselbrink, Ernesten_US
dc.contributor.authorWaite, J. Hunteren_US
dc.contributor.authorSacks, Richarden_US
dc.date.accessioned2007-05-02T14:19:47Z
dc.date.available2007-05-02T14:19:47Z
dc.date.issued2006-05en_US
dc.identifier.citationHasselbrink, Ernest; Waite, J. Hunter; Sacks, Richard (2006). "At-column heating and a resistively heated, liquid-cooled thermal modulator for a low-resource bench-top GC×GC." Journal of Separation Science 29(7): 1001-1008. <http://hdl.handle.net/2027.42/50683>en_US
dc.identifier.issn1615-9306en_US
dc.identifier.issn1615-9314en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/50683
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=16833233&dopt=citationen_US
dc.description.abstractA transportable GC×GC instrument is under development for on-site applications that would benefit from the enhanced resolution and powers of detection, which can be achieved by this method. In the present study, a low-resource GC×GC instrument using an electrically heated and liquid-cooled single-stage thermal modulator that requires no cryogenic materials is evaluated. The instrument also uses at-column heating, thus eliminating the need for a convection oven to house the two columns. The stainless-steel modulator tube is coated with PDMS, which can be heated to 350°C for sample injection into the second-dimension column. The modulator is cooled to –30°C by a 100 mL/min flow of PEG by means of a commercial liquid chiller and a small recirculating pump. Resistive heating of the modulator tube is provided by a programmable power supply, which uses a voltage program that results in increasing modulator temperature during an analysis. This, together with more rapid cooling by the use of a liquid cooling medium, results in reduced solute breakthrough following each heating cycle as the modulator cools to a temperature where quantitative trapping resumes. As a result, modulated peak widths at half-height of less than 40 ms are observed. Design and performance details are presented along with chromatograms of gasoline and an essential oil sample.en_US
dc.format.extent1001966 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.publisherWILEY-VCH Verlagen_US
dc.subject.otherChemistryen_US
dc.subject.otherAnalytical Chemistry and Spectroscopyen_US
dc.titleAt-column heating and a resistively heated, liquid-cooled thermal modulator for a low-resource bench-top GC×GCen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelChemical Engineeringen_US
dc.subject.hlbsecondlevelChemistryen_US
dc.subject.hlbsecondlevelManagementen_US
dc.subject.hlbsecondlevelEconomicsen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.subject.hlbtoplevelScienceen_US
dc.subject.hlbtoplevelBusinessen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USAen_US
dc.contributor.affiliationumDepartment of Atmospheric, Oceanic and Space Science, University of Michigan, Ann Arbor, MI, USAen_US
dc.contributor.affiliationumDepartment of Chemistry, University of Michigan, Ann Arbor, MI, USA. Fax: +1-702-614-1189en_US
dc.identifier.pmid16833233en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/50683/1/1001_ftp.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1002/jssc.200500298en_US
dc.identifier.sourceJournal of Separation Scienceen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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