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

  1. Sanz Vicente, I. 1
  2. Cabredo Pinillos, S. 1
  3. Sanz Vicente, F. 1
  4. Galban Bernal, J. 2
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Revista:
Chromatographia

ISSN: 0009-5893

Año de publicación: 1996

Volumen: 42

Número: 7

Páginas: 435-440

Tipo: Artículo

DOI: 10.1007/BF02272136 SCOPUS: 2-s2.0-0030005917 WoS: WOS:A1996UM19100012 GOOGLE SCHOLAR

Otras publicaciones en: Chromatographia

Resumen

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.