Author/Authors :
Ré-Poppi، نويسنده , , N. and Almeida، نويسنده , , F.F.P. and Cardoso، نويسنده , , C.A.L. and Raposo Jr.، نويسنده , , J.L. and Viana، نويسنده , , L.H. and Silva، نويسنده , , T.Q. and Souza، نويسنده , , J.L.C. and Ferreira، نويسنده , , V.S.، نويسنده ,
Abstract :
Forty four samples of type C gasoline, obtained from service stations of five different distributors, and samples of type A gasoline were analyzed by gas chromatography–flame ionization detection (GC–FID) using a low-polarity capillary column. Linear retention indices (LRI) were calculated, and individual components of the gasoline samples were characterized using a detailed hydrocarbon analysis software (StarDHA™). The quantitative data obtained by the chromatographic method were compared with data obtained by official standard methods. Hierarchical cluster analysis was used to determine the degree of similarity between the samples. Detailed hydrocarbon analysis revealed that some of the samples from service stations were probably adulterated with organic solvents.
Keywords :
Retention index , Gasoline , Detailed hydrocarbon analysis , Cluster analysis
