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Title: Non-planar microfabricated gas chromatography column

Abstract

A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elution of separated analytes. A plurality of such planar substrates can be aligned and stacked to provide a longer column length having a small footprint. Furthermore, two or more separate channels can enable multi-channel or multi-dimensional gas chromatography. The through holes preferably have a circular cross section and can be coated with a stationary phase material or packed with a porous packing material. Importantly, uniform stationary phase coatings can be obtained and band broadening can be minimized with the circular channels. A heating or cooling element can be disposed on at least one of the lids to enable temperature programming of the column.

Inventors:
 [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
916926
Patent Number(s):
7273517
Application Number:
11/067,107
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Lewis, Patrick R, and Wheeler, David R. Non-planar microfabricated gas chromatography column. United States: N. p., 2007. Web.
Lewis, Patrick R, & Wheeler, David R. Non-planar microfabricated gas chromatography column. United States.
Lewis, Patrick R, and Wheeler, David R. Tue . "Non-planar microfabricated gas chromatography column". United States. https://www.osti.gov/servlets/purl/916926.
@article{osti_916926,
title = {Non-planar microfabricated gas chromatography column},
author = {Lewis, Patrick R and Wheeler, David R},
abstractNote = {A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elution of separated analytes. A plurality of such planar substrates can be aligned and stacked to provide a longer column length having a small footprint. Furthermore, two or more separate channels can enable multi-channel or multi-dimensional gas chromatography. The through holes preferably have a circular cross section and can be coated with a stationary phase material or packed with a porous packing material. Importantly, uniform stationary phase coatings can be obtained and band broadening can be minimized with the circular channels. A heating or cooling element can be disposed on at least one of the lids to enable temperature programming of the column.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {9}
}

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Works referenced in this record:

Design, Fabrication, and Evaluation of Microfabricated Columns for Gas Chromatography
journal, May 2004


Height Equivalent to a Theoretical Plate Theory for Rectangular GC Columns
journal, November 1998


Relationships for modeling the performance of rectangular gas chromatographic columns
journal, January 2001


Microfabricated silicon gas chromatographic microchannels: fabrication and performance
conference, August 1998