Abstract
Gas chromatography (GC) is one of the most widespread techniques used in laboratories as a way to separate and analyze complex mixtures of volatile and semi-volatile compounds. The main advantage of miniaturization of these systems is the increased performance due to the reduced time for analysis and reduced fabrication cost of the complex pneumatic flow system. In this paper advanced design ideas and fabrication processes to facilitate integration of the sample concentrator and the column will be presented. Using the LIGA process, 0.5- and 2-m-long, 50-μm-wide, and up to 600-μm-high aspect ratio metal GC separation columns with on-chip integrated sample injection and detection were fabricated. Initial experiments of coating these high aspect ratio columns show promising results when compared to simple tubular columns.
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Notes
State-of-the-art GC instruments are built by a number of companies, for example, SRI Instruments, Torrance, CA, USA ( http://www.srigc.com), Agilent Technologies, USA (http://www.chem.agilent.com), Perkin Elmer, USA (http://www.perkinelmer.com), and Varian Inc., Palo Alto, CA, USA (http://www.varianinc.com)
DARPA’s MGA is supporting research for this group of compounds: http://www.darpa.mil/mto/mga/.
http://www.ca.sandia.gov/chembio/tech_projects/detection/micro-chem-lab.html.
Fabrication and testing of micro-gas chromatograph columns, Poster presentation at HARMST 2003, Monterey, CA.
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Acknowledgments
The authors acknowledge funding support from the DARPA MGA program. Cleanroom and X-ray exposure support from the CAMD service group is appreciated. Special thanks to Restek Corporation for their help with coating the columns, Sonix Inc. for performing acoustic microscopy, and Orhan Kizilkaya at CAMD for conducting the IR analysis. Finally, the support of our colleagues at Sandia National Laboratories, Albuquerque, is greatly appreciated.
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Bhushan, A., Yemane, D., Trudell, D. et al. Fabrication of micro-gas chromatograph columns for fast chromatography. Microsyst Technol 13, 361–368 (2007). https://doi.org/10.1007/s00542-006-0210-3
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DOI: https://doi.org/10.1007/s00542-006-0210-3