Evolved gas analysis (EGA)

  • Michael E. Brown


Many samples, on heating, release gases or vapour through desorption or decomposition. This release is accompanied by thermal effects and, obviously, mass losses, which, themselves, can be detected by the appropriate thermal analysis technique, e.g. DTA or DSC and TG respectively. The thermal analysis technique does not, however, identify the gas evolved and, for complex decompositions, such information is essential. It has thus become fairly routine to couple the basic techniques already described with a system for either detecting the evolution of gas (or gases) from the sample (evolved gas detection, EGD) or, more satisfactorily, detecting and identifying the gases evolved (evolved gas analysis, EGA) [1]. The apparatus for EGA will obviously be more complex than that required for EGD.


Atmospheric Pressure Chemical Ionization Thermal Analysis Technique Thermal Analysis Experiment Atmospheric Pressure Chemical Ionization Source Thermal Analysis Instrument 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Loading, W. (ed.) (1967) Gas Effluent Analysis, Edward Arnold, London.Google Scholar
  2. 2.
    Dollimore, D., Gamlen, G. A. and Taylor, T. J. (1984) Thermochim. Acta, 75, 59.CrossRefGoogle Scholar
  3. 3.
    Holdiness, M. R. (1984) Thermochim. Acta, 75, 361.CrossRefGoogle Scholar
  4. 4a.
    Emmerich, W. D. and Kaiserberger, E. (1979) J. Therm. Anal., 17,197;CrossRefGoogle Scholar
  5. 4b.
    Emmerich, W. D. and Kaiserberger, E. (1982) Proc. 7th ICTA, Vol. 1, Wiley, Chichester, p. 279.Google Scholar
  6. 5.
    Barnes, P. A., Stephenson, G. and Warrington, S. B. (1981) Proc. ESTA 2, Heyden, London, p. 47.Google Scholar
  7. 6.
    Chan, K. C., Tse, R. S. and Wong, S. C. (1982) Anal. Chem., 54, 1238.CrossRefGoogle Scholar
  8. 7.
    Clarke, E. (1981) Thermochim. Acta, 51, 7.CrossRefGoogle Scholar
  9. 8.
    Dyszel, S. M. (1983) Thermochim. Acta, 61, 169.CrossRefGoogle Scholar
  10. 9.
    Garn, P. D. and Anthony, G. D. (1967) Anal. Chem., 39, 1445.CrossRefGoogle Scholar
  11. 10.
    Garn, P. D. (1964) Talanta, 11, 1417.CrossRefGoogle Scholar
  12. 11.
    Blandenet, G. (1969) Chromatographia, 2, 184.CrossRefGoogle Scholar
  13. 12.
    Hachenburg, H. (1973) Industrial Gas Chromatographic Trace Analysis, Heyden, London.Google Scholar
  14. 13.
    Thompson, B. (1977) Fundamentals of Gas Analysis by Gas Chromatography, Varian, Palo Alto.Google Scholar
  15. 14.
    Morgan, D. J. (1977) J. Thermal Anal., 12, 245.CrossRefGoogle Scholar
  16. 15.
    Filsinger, D. H. and Bourrie, D. B. (1982) Proc. 7th ICTA, Vol. 1, Wiley, Chichester, p. 284.Google Scholar
  17. 16.
    Lephardt, J. O. (1982–3) Appl. Spectrosc. Rev., 18, 265.CrossRefGoogle Scholar
  18. 17.
    Liebman, S. A., Ahlstrom, D. H. and Griffiths, P. R. (1976) Appl. Spectrosc., 30, 355.CrossRefGoogle Scholar
  19. 18.
    Lephardt, J. O. and Fenner, R. A. (1980) Appl. Spectrosc., 34, 174.CrossRefGoogle Scholar
  20. 19.
    Lephardt, J. O. and Fenner, R. A. (1981) Appl. Spectrosc., 35, 95.CrossRefGoogle Scholar
  21. 20.
    Davidson, R. G. and Mathys, G. I. (1986) Anal. Chem., 58, 837.CrossRefGoogle Scholar
  22. 21.
    Warrington, S. B. and Barnes, P. A. (1980) Proc 6th ICTA, Vol. 1, Birkhaeuser Verlag, Basel, p. 327.Google Scholar
  23. 22.
    Gallagher, P. K., Gyorgy, E. M. and Jones, W. R. (1982) J. Thermal Anal., 23, 185.CrossRefGoogle Scholar
  24. 23.
    Gallagher, P. K. and Gyorgy, E. M. (1980) Proc 6th ICTA, Vol. 1, Birkhaeuser Verlag, Basel, p. 113.Google Scholar
  25. 24.
    Cote, R., Bale, C. W. and Gauthier, M. (1984) J. Electrochem. Soc., 131, 63.CrossRefGoogle Scholar
  26. 25.
    Dessy, R. E. (1985) Anal. Chem., 57, 1188A, 1298A.CrossRefGoogle Scholar
  27. 26.
    Schmid, R. L. and Felsche, J. (1982) Thermochim. Acta, 59, 105.CrossRefGoogle Scholar

Copyright information

© Michael E. Brown 1988

Authors and Affiliations

  • Michael E. Brown
    • 1
  1. 1.Department of Chemistry and BiochemistryRhodes UniversityGrahamstownSouth Africa

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