Analysis of PIONA composition in finished motor gasoline by GC-VUV

Introduction

An analytical method was established in this paper for determination of the contents of all hydrocarbon components and specific hydrocarbon groups of paraffins, isoparaffins, olefins, naphthenes and aromatic hydrocarbons (PIONA) in finished motor gasoline by GC-VUV. The analysis results showed the method could complete the analysis of all hydrocarbon components in finished motor gasoline within 33 min. Various groups of hydrocarbons were identified by their specific VUV absorption spectra in the VUVision software platform and the coeluting species were effectively separated by the time interval deconvolution (TID) method in the full automatic data processing software VUVAnalyze and the results were valid and reliable. The relative standard deviation in 5 replicate tests was less than 1%, indicating good repeatability.

November 18, 2021 GMT