At-column heating and a resistively heated, liquid-cooled thermal modulator for a low-resource bench-top GC×GC
dc.contributor.author | Hasselbrink, Ernest F. | en_US |
dc.contributor.author | Waite, J. Hunter | en_US |
dc.contributor.author | Sacks, Richard D. | en_US |
dc.date.accessioned | 2007-05-02T14:19:47Z | |
dc.date.available | 2007-05-02T14:19:47Z | |
dc.date.issued | 2006-05 | en_US |
dc.identifier.citation | Hasselbrink, 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.issn | 1615-9306 | en_US |
dc.identifier.issn | 1615-9314 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/50683 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=16833233&dopt=citation | en_US |
dc.description.abstract | A 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.extent | 1001966 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | WILEY-VCH Verlag | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Analytical Chemistry and Spectroscopy | en_US |
dc.title | At-column heating and a resistively heated, liquid-cooled thermal modulator for a low-resource bench-top GC×GC | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Chemical Engineering | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbsecondlevel | Management | en_US |
dc.subject.hlbsecondlevel | Economics | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Business | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationum | Department of Atmospheric, Oceanic and Space Science, University of Michigan, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationum | Department of Chemistry, University of Michigan, Ann Arbor, MI, USA. Fax: +1-702-614-1189 | en_US |
dc.identifier.pmid | 16833233 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/50683/1/1001_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/jssc.200500298 | en_US |
dc.identifier.source | Journal of Separation Science | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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