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A simple detection system for gas chromatography based on molecular absorption spectrometry in the gas phase

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Summary

A simple and inexpensive detection system for gas chromatography, based on gas-phase, molecular absorption measurements, is presented in which the chromatographic column is directly joined to the spectrophotometer flow cell, without heated transfer lines. A mixture of eight benzene compounds (including methyl, halogen and nitrogen derivatives) were separated and analyzed. Parameters affecting separation (temperature program and carrier gas flow) and measurement quality (wavelength and integration time) were studied and a measurement program designed to modify the wavelength during chromatography. The analytical characteristics of each compound were calculated, obtaining detection limits ranging from 0.5 to 9 μg mL−1. Finally, the method was applied to several synthetic mixtures, with good results.

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Authors and Affiliations

  1. Chemistry Department, Analytical Chemistry Section, University of La Rioja, 26001, Logroño, Spain

    I. Sanz Vicente, S. Cabredo Pinillos & F. Sanz Vicente

  2. Analytical Chemistry Department, Faculty of Sciences, University of Zaragoza, 50009, Zaragoza, Spain

    J. Galban Bernal

Authors
  1. I. Sanz Vicente
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  2. S. Cabredo Pinillos
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  3. F. Sanz Vicente
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  4. J. Galban Bernal
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Vicente, I.S., Pinillos, S.C., Vicente, F.S. et al. A simple detection system for gas chromatography based on molecular absorption spectrometry in the gas phase. Chromatographia 42, 435–440 (1996). https://doi.org/10.1007/BF02272136

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  • DOI: https://doi.org/10.1007/BF02272136

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