USE OF PERSISTENT TRACE GAS-CHROMATOGRAPHY ARTIFACTS FOR THE CALCULATION OF PSEUDO-SADTLER RETENTION INDEXES

Pseudo-Sadtler retention indices were calculated using persistent trac e level capillary column artifacts, evident in the gas chromatography- mass spectrometry analysis of a natural product extract. The artifacts consisted mainly of a series of polymethylcyclosiloxanes eluting duri ng a linear temperature program. These were used to determine retentio n indices of structures in the extract, and these indices were then co mpared with those derived from the more traditional n-alkanes calibrat ion method. (C) 1998 Elsevier Science B.V. All rights reserved.