Gas-chromatographic headspace analysis of phenol and cresols in soils by direct acetylation

Autor:	Maria P. Llompart-Vizoso, Rafael Cela-Torrijos, R.A. Lorenzo-Ferreira
Rok vydání:	1996
Předmět:	Detection limit Chromatography Chemistry General Chemical Engineering Cresol chemistry.chemical_compound Acetic anhydride Desorption parasitic diseases medicine Phenol Phenols Gas chromatography Derivatization medicine.drug
Zdroj:	Journal of High Resolution Chromatography. 19:207-212
ISSN:	1521-4168 0935-6304
DOI:	10.1002/jhrc.1240190406
Popis:	A quick, simple and selective procedure has been developed for the determination of phenol, o-cresol, m-cresol, and p-cresol in soil samples. The method is based on the gas chromatographic headspace analysis of phenols as acetate derivatives. These acetates were prepared directly in the wetted soil samples by acetic anhydride in the presence of KHCO3˙ With this procedure sample handling is reduced to a minimum as desorption and derivatization of the analytes are developed from the wetted samples inside the vial of the head space sampler. The acetate esters were analyzed using a 60 m × 0.56 mm DIIDP capillary column (di-isodecyl-phthalate), using 2-chlorophenol as an internal standard. The detection limit was between 0.03–0.08 μg g−1 for the different species considered. Soil samples having carbon contents lower than 5 % can be analyzed by the proposed procedure.
Databáze:	OpenAIRE
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