Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume 37, Number
8, August 1999, pp. 288-294
Reliability
of Van den Dool Retention Indices in the Analysis of Essential Oils
Carlo
Bicchi, Arianna Binello, Angela D’Amato, and Patrizia RubioloThe
aim of this study is to evaluate how extensive retention indices (RIs) can be
identifying an essential oil component within a single laboratory. The essential
oils of Matricaria chamomilla L., Tagetes lucida Cav., and Artemisia roxburghiana
Wall. are investigated with different columns and under different analytical conditions.
These oils are analyzed with a GC unit and columns coated with the same stationary
phases (polysiloxane OV-1 and polyethylene glycol CW-20M) but different characteristics
(producer and inner diameter) under different analytical conditions (temperature
program and mobile phase conditions). The great number of data obtained are used
to determine what parameters other than stationary phase influence RI reliability,
the range of variation of RIs with different columns or under different operating
conditions, and the validity of D-RI measurements.
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