Gas Phase Molecular Absorption Spectrometry as a Gas Chromatography detector: Determination of alcohols
- Sanz-Vicente, I. 1
- Cabredo, S. 1
- Galban, J. 2
-
1
Universidad de La Rioja
info
-
2
Universidad de Zaragoza
info
ISSN: 0021-9665
Datum der Publikation: 1999
Ausgabe: 37
Nummer: 4
Seiten: 126-132
Art: Artikel
Andere Publikationen in: Journal of Chromatographic Science
Zusammenfassung
A mixture containing methanol, ethanol, 2-propanol, 1-butanol, 1-pentanol, 1-hexanol, benzyl alcohol, phenol, 2,4-dimethylphenol, 2,3-dimethylphenol, and 2-nitrophenol is analyzed using a simple detection system for gas chromatography based on molecular absorption spectrometry in the gas phase. All of the parameters affecting the determination are optimized, including solvent, temperature, carrier gas flow, type of flow cell, injection volume, and measurement wavelength. The analytical characteristics of each compound are calculated, obtaining detection limits ranging from 2.5 to 15 mg/L for aromatic alcohols and from 47 to 120 mg/L for lineal alcohols. The method is applied to several synthetic mixtures with good results.