Clasificación de petróleos mexicanos mediante cromatografía de gases y análisis de componentes principales

In this paper, the traditional method applied for crude oil characterization and classification studies based on the C7 hydrocar- bons, was evaluated. With this aim, a chromatographic data set of 43 oil samples collected from three important productive areas of crude oils in Mexico, was used. We found that this method does not clearly classify into three groups the considered Mexican oils. Therefore, we set forth the use of a new star diagram developed specifically for Mexican crude oils on the basis of the five most typical and represen- tative parameters identified by principal component analysis (ethyl- cyclopentane, 3-ethylpentane, 3,3-dimethylpentane, 2,2,3- trimethylbutane and toluene).