Chromatographia

, Volume 21, Issue 12, pp 681–686 | Cite as

Gas chromatography of low molecular weight halocarbons on macroporous silica modified by a thin liquid phase film

  • Yu. S. Nikitin
  • M. B. Viryasov
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Summary

The use of the silica adsorbent Silochrom C-80 modified by a thin liquid stationary phase film is proposed for the gas chromatographic analysis of low molecular weight halocarbons. Such modified adsorbents are characterized by good retention of the volatile halocarbons and high selectivity with respect to halocarbons. The thermodynamic sorption characteristics of alkanes, chloroalkanes and chloromethanes on Silochrom modified by three liquid phases (Apiezon L, methylsilicone and polyethylene glycol 20M) and on Chromaton N with thick films of the same phases were studied. The heats of sorption (−ΔH) and free sorption energy changes (−ΔF) of these substances and the increments −Δ(ΔH) and −Δ(ΔF) per chlorine atom in the chloralkane molecule compared with n-alkanes with the same number of carbon atoms were determined. The “chlorine” retention indices of low molecular weight volatile halocarbons on three sorbents were determined to identify them in aqueous solutions using the electron-capture detector. The analysis of drinking water by this technique is demonstrated.

Key Words

Gas chromatography Macroporous silica Silica-adsorbent modification Low boiling halocarbons Analysis of water pollutants 
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References

  1. [1]
    F. Bruner, C. Bertoni, G. Grescentini, J. Chromatogr.,167, 399 (1978).Google Scholar
  2. [2]
    M. Y. B. Othman, J. H. Purnell, P. Wainwright, P. S. Williams, J. Chromatogr.,289, 1 (1984).CrossRefGoogle Scholar
  3. [3]
    A. V. Kiselev, Ya. I. Yashin, Gazovaya i Zhidkostnaya Adsorptsionnaya Chromatographya (Gas and Liquid Adsorption Chromatography), Nauka, Moscow, 1976.Google Scholar
  4. [4]
    B. C. Nickolson, B. D. Bursill, D. J. Couche, J. Chromatogr.,325, 221 (1985).Google Scholar
  5. [5]
    S. Daichima, Y. Iida, T. Kajiki, Nippon Kagaku Kaishi (J. Chem. Soc. Jap., Chem. & Ind. Chem.),7, 1146 (1984).Google Scholar
  6. [6]
    A. Yasuhara, M. Morita, K. Fuwa J. Chromatogr.,328, 35 (1985).CrossRefGoogle Scholar
  7. [7]
    A. V. Kiselev, N. V. Kovaleva, Yu. S. Nikitin, J. Chromatogr.,58, 19 (1971).Google Scholar
  8. [8]
    M. B. Viryasov, Yu. S. Nikitin, Zavodskaya laboratoriya,52 (3), 17 (1986).Google Scholar

Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1986

Authors and Affiliations

  • Yu. S. Nikitin
    • 1
  • M. B. Viryasov
    • 1
  1. 1.Department of ChemistryMoscow State UniversityMoscowUSSR

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