Design, testing, and simulation of microscale gas chromatography columns

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Description

A microscale gas chromatography column is one component in a microscale chemistry laboratory for detecting chemical agents. Several columns were fabricated using the Bosch etch process which allows deep, high aspect ratio channels of rectangular cross-section. A design tool, based on analytical models, was developed to evaluate the effects of operating conditions and column specifications on separation resolution and time. The effects of slip flow, channel configuration, and cross-sectional shape were included to evaluate the differences between conventional round, straight columns and the microscale rectangular, spiral columns. Experimental data were obtained and compared with the predicted flowrates and theoretical number ... continued below

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8 p.

Creation Information

Hudson, M. L.; Kottenstette, R.; Matzke, C. M.; Frye-Mason, G. C.; Shollenberger, K. A.; Adkins, D. R. et al. August 1998.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A microscale gas chromatography column is one component in a microscale chemistry laboratory for detecting chemical agents. Several columns were fabricated using the Bosch etch process which allows deep, high aspect ratio channels of rectangular cross-section. A design tool, based on analytical models, was developed to evaluate the effects of operating conditions and column specifications on separation resolution and time. The effects of slip flow, channel configuration, and cross-sectional shape were included to evaluate the differences between conventional round, straight columns and the microscale rectangular, spiral columns. Experimental data were obtained and compared with the predicted flowrates and theoretical number of plates. The design tool was then employed to select more optimum channel dimensions and operating conditions for high resolution separations.

Physical Description

8 p.

Notes

OSTI as DE98007188

Source

  • 1998 international mechanical engineering congress and exposition, Anaheim, CA (United States), 15-20 Nov 1998

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  • Other: DE98007188
  • Report No.: SAND--98-1551C
  • Report No.: CONF-981107--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 674603
  • Archival Resource Key: ark:/67531/metadc710213

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Office of Scientific & Technical Information Technical Reports

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  • August 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • May 5, 2016, 8:26 p.m.

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Hudson, M. L.; Kottenstette, R.; Matzke, C. M.; Frye-Mason, G. C.; Shollenberger, K. A.; Adkins, D. R. et al. Design, testing, and simulation of microscale gas chromatography columns, article, August 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710213/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.