ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Gas chromatographic retention times prediction for components of petroleum condensate fraction
Nagy E. Moustafa
Egyptian Petroleum Research Institute, 11727 Nasr City, Cairo, Egypt
Received: 4 October 2008 Revised: 30 January 2009 Accepted: 30 January 2009
Abstract: A new and simple quantitative structure-retention relationship (QSRR) was tested as a predictive model for adjusted retention
times in complex petroleum condensate fractions. This relationship adopted the form of a non-linear collective retention-variables
model. The adjusted retention times were correlated with the components molecular descriptors, e.g. total path counts and
boiling temperatures, by multi-linear regression analysis. The obtained two QSRR models show an acceptable predictive accuracy
2 of 0.9949 and 0.9856, respectively. Stability and validity of the models were tested by comparing the calculated and the
experimental retention indices.
Keywords: QSRR - gas chromatography - petroleum condensate fractions - non-linear equation
Full paper is available at www.springerlink.com.
Chemical Papers 63 (5) 608–612 (2009)