SR EN 18015:2024

This test method is a standard procedure for the determination of saturates, olefins, aromatics and oxygenates in unleaded petrol using gas chromatography and vacuum ultraviolet detection (GC-VUV). Concentrations of compound classes and certain individual compounds are determined by mass fraction % (m/m) or volume fraction % (V/V). The concentration ranges for which the method is applicable are given in Table 1. NOTE For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction, respectively. This test method has been tested for unleaded petrol according EN 228 [1]; Although specifically developed for the analysis of automotive motor gasoline including those that contain oxygenates this test method applies to other hydrocarbon streams having similar boiling ranges, such as naphthas and reformates. The method is found to be applicable to petrol containing other oxygenates than indicated in Table 1, such as isopropanol, iso-butanol, tert-butanol, n-propanol, acetone, tert-pentanol and di-isopropyl ether