2026-09-20T03:00:23Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/26415 2023-07-10 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Shannon, Mark A. Kim, Jihyung 2011-08-26T15:35:01Z 2013-08-27T10:00:28Z 2011-08-26T15:35:01Z 2011-08 A micro-flame ionization detector (micro-FID) was developed operating with a diffusion flame with a folded flame structure. Unlike conventional FIDs, an air-hydrogen diffusion flame was developed and tested in an encapsulated structure of Quartz-Macor®-Quartz layers. Diffusion flames are generally known to be more controllable and stable than premixed flames, which fits our purpose for the micro-FID, where the stability plays an important role for many applications. Various Macor designs including a burner cavity and a micro-channel were tested to obtain highest output sensitivity over methane test samples. In order to gauge sensitivity of the device, collected electric charge per mole (C/mol) was calculated and taken as a reference value of ionization efficiency. The result was 1.959x10-2 C/mol for methane which was about 34 times higher compared to the result obtained using a counter-flow flame, which was 5.73x10-4 C/mol for methane, while one of the commercial macro FIDs has 10-1 C/mol. This result shows that the micro-FID using the folded flame structure enhances ionization with less leakage of the analytes than the classical counter-flow flame design. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-07-21T12:26:24Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Kim_Jihyung.doc: 5334528 bytes, checksum: c58ec6507140428f782f8078bba20f1c (MD5) Kim_Jihyung.pdf: 1089333 bytes, checksum: 21f47a80c0209c56b606aa9a0dc7f4dc (MD5) Made available in DSpace on 2011-08-26T15:35:01Z (GMT). No. of bitstreams: 4 Kim_Jihyung.pdf: 1089425 bytes, checksum: 59d75467bc031bddad95d47aca50d4f5 (MD5) license.txt: 4059 bytes, checksum: 2dab0451c469579e7653009195fccd8b (MD5) Kim_Jihyung.doc: 5339648 bytes, checksum: cec2c4a487725932370ae4fce4a11499 (MD5) 1_Kim_Jihyung.doc: 5339648 bytes, checksum: cec2c4a487725932370ae4fce4a11499 (MD5) Item marked as restricted to the 'Administrator' Group (id=1) by William Ingram (wingram2@illinois.edu) on 2011-08-26T15:35:54Z Item is restricted until 2013-08-26T15:35:26Z Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2013-08-27T10:00:28Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Mechanical Science and Engineering (ID: 675) No. of bitstreams: 5 Kim_Jihyung.pdf.txt: 38433 bytes, checksum: fbcc3be4d3793e36a3413544c1c90871 (MD5) Kim_Jihyung.pdf: 1089425 bytes, checksum: 59d75467bc031bddad95d47aca50d4f5 (MD5) license.txt: 4059 bytes, checksum: 2dab0451c469579e7653009195fccd8b (MD5) Kim_Jihyung.doc: 5339648 bytes, checksum: cec2c4a487725932370ae4fce4a11499 (MD5) 1_Kim_Jihyung.doc: 5339648 bytes, checksum: cec2c4a487725932370ae4fce4a11499 (MD5) Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2013-08-27T10:00:28Z http://hdl.handle.net/2142/26415 en Copyright 2011 Jihyung Kim micro flame ionization detector Development of a micro-FID using a diffusion flame Mechanical Sci & Engineering 1917 Mechanical Engineering 0133 University of Illinois at Urbana-Champaign Thesis M.S. PHD:Mechanical Enginerng -UIUC 10KS0133PHD