Journal Article Forum for Chromatographers: Testing Gas Chromatographic Instruments Get access John Q. Walker, John Q. Walker IBM Instruments, Inc., P.O. Box 332, Danbury, Connecticut 06810 Search for other works by this author on: Oxford Academic PubMed Google Scholar Samuel F. Spencer, Samuel F. Spencer IBM Instruments, Inc., P.O. Box 332, Danbury, Connecticut 06810 Search for other works by this author on: Oxford Academic PubMed Google Scholar Susan M. Sonchik Susan M. Sonchik IBM Instruments, Inc., P.O. Box 332, Danbury, Connecticut 06810 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 23, Issue 12, December 1985, Pages 555–560, https://doi.org/10.1093/chromsci/23.12.555 Published: 01 December 1985

Journal Article The Model Molecular Thermometer: A Standardization Method for Pyrolysis Gas Chromatography Get access E.J. Levy, E.J. Levy Chemical Data Systems, Inc., 7000 Limestone Road, Oxford, Pennsylvania 19363 Search for other works by this author on: Oxford Academic PubMed Google Scholar J.Q. Walker J.Q. Walker IBM Instruments, Inc., Orchard Park, P.O. Box 332, Danbury, Connecticut 06810 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 22, Issue 2, February 1984, Pages 49–55, https://doi.org/10.1093/chromsci/22.2.49 Published: 01 February 1984 Article history Received: 28 December 1983 Published: 01 February 1984

Journal Article A Forum for Chromatographers Get access J.B. Maynard, J.B. Maynard Shell Oil Company Wood River, Illinois 62095 Search for other works by this author on: Oxford Academic PubMed Google Scholar John Q. Walker John Q. Walker Coeditor, P.O. Box 48312, Niles, Illinois 60648, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 19, Issue 5, May 1981, Pages 270–271, https://doi.org/10.1093/chromsci/19.5.270 Published: 01 May 1981

Reverse phase liquid chromatographic methods have been developed for the quality control of epoxy resin formulations. The results show that different formulations require different instrumental parameters for optimun separation and detection. Operating parameters required for the analysis of complex mixtures of epoxy resins, which include curing agents and diluents, are described in this paper. Parameters found to be critical are column temperature, solvent flow rate and gradient, and detector wavelength. Microprocessor parameters required to obtain reproducible data are also discussed.

Journal Article Determination of Carboxyl-Terminated-Butadiene-Nitrile Polymer in Commercial Cresol-Novalac Epoxy Resin Systems by Pyrolysis Capillary Gas Chromatography and Mass Spectrometry Get access J.B. Maynard, J.B. Maynard McDonnell-Douglas Corporation, Materials Laboratory, P.O. Box 516, St. Louis, Missouri, 63166 Search for other works by this author on: Oxford Academic PubMed Google Scholar J.E. Twichell, J.E. Twichell McDonnell-Douglas Corporation, Materials Laboratory, P.O. Box 516, St. Louis, Missouri, 63166 Search for other works by this author on: Oxford Academic PubMed Google Scholar J.Q. Walker J.Q. Walker McDonnell-Douglas Corporation, Materials Laboratory, P.O. Box 516, St. Louis, Missouri, 63166 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 17, Issue 2, February 1979, Pages 82–86, https://doi.org/10.1093/chromsci/17.2.82 Published: 01 February 1979

An important consideration in glass capillary column gas chromatography is the choice of the best sample inlet system for either splitting or splitless injection. This paper describes a simple direct glass-lined inlet, and describes its advantages over conventional split and splitless injection systems for trace component analysis. Several analyses are described which illustrate the superiority of the new direct inlet for these applications. The design of the new direct inlet system is such that column efficiency is not impaired and is equivalent to that of split injections.

Journal Article Pyrolysis Gas Chromatographic Correlation Trials of the American Society for Testing and Materials Get access John Q. Walker John Q. Walker McDonnell Douglas Research Laboratories, McDonnell Douglas Corporation, St. Louis, Missouri 63166 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 15, Issue 7, July 1977, Pages 267–274, https://doi.org/10.1093/chromsci/15.7.267 Published: 01 July 1977 Article history Received: 26 May 1977 Received: 10 June 1977 Published: 01 July 1977