This application note describes the quantitative analysis of n- and iso-saturates, n- and iso-olefins, and aromatics in spark-ignition engine fuels by multi-dimensional gas chromatography using the Varian PIONA+™ Analyzer. The system is capable of analyzing and reporting hydrocarbon types (paraffins, iso-paraffins, olefins, iso-olefins, naphthenes and aromatics) based on carbon number or as a total.
This document details the use of the Varian PIONA+ Analyzer, which combines a Varian 450-GC Gas Chromatograph with a multi-column module and Galaxie Software. The system is designed for the quantitative analysis of n- and iso-saturates, n- and iso-olefins, and aromatics in spark-ignition engine fuels based on carbon number or as a total.
The note provides an example chromatogram and discusses results from calibration samples (CP299107 and CP299103). It presents weight% and volume% reports generated by the software, demonstrating the analyzer's ability to separate hydrocarbon groups for precise identification and quantification in accordance with DIN 51448-2 standards.
The analyzer analyzes and reports paraffins, iso-paraffins, olefins, iso-olefins, naphthenes, and aromatics based on carbon number or as a total.
The analyzer provides mass% and volume% in accordance with the DIN 51448-2 standard method.