Evaluation of capillary gas chromatography columns for the determination of free volatile amines after solid-phase microextraction |
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Authors: | M Ábalos R Mas V Suc J M Bayona |
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Institution: | (1) Environmental Chemistry Department IIQAB-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain;(2) Teknokroma, Sant Cugat del Vallès, Barcelona, Spain |
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Abstract: | Summary Gas-liquid chromatographic capillary columns coated with 14% diphenyldimethylpolysiloxane, base-deactivated 5% diphenyldimethylpolysiloxane,
or poly(ethylene glycol), and deactivated porous polymer for capillary gas-solid chromatography were evaluated for analysis
of low-molecular-weight (C1−C9) amines. Solid-phase microextraction with a polydimethylsiloxane fiber was used for headspace sampling and for introduction
of the sample into the gas chromatograph. As expected, basic of aliphatic gaseous or volatile aliphatic amines (carbon number:
C1−C4). A thick (e. g. 3 μm) film of 5% diphenyldimethylpolysiloxane enabled determination of analytes in a wider molecular-weight
range (C3−C9) with acceptable efficiency and resolution. |
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Keywords: | Gas chromatography SPME headspace sampling Base-deactivated columns Volatile amines |
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