1. Scope 1.1 This test method is a standard procedure for the determination of saturated, aromatic and di-aromatic aromatic content in aviation turbine fuels using gas chromatography and vacuum ultraviolet detection (GC-VUV). 1.2 Concentrations of compound classes and certain individual compounds are determined by percent mass or percent volume. 1.2.1 The method is developed for testing aviation turbine engine fuels having concentrations of approximately 70% to 99% by volume saturated compounds, 1.0% to 30% by volume aromatic compounds, and 0.1% to 5% by volume di-aromatics. Pending confirmation by a full interlaboratory study, the method is projected to be applicable to a wider range of concentrations and matrices. Temporary repeatability has been determined on a limited subset of samples given in 17.1. Note 1 : Samples with a final boiling point greater than 300C that contain tri-aromatics and higher polyaromatic compounds are not determined by this method. 1.3 Individual hydrocarbon components are not reported by this method, however, any individual component determinations are included in the appropriate summation of the saturate, aromatic, or di-aromatic groups. 1.3.1 Individual compound peaks are typically not baseline-separated by the procedure described in this test method, that is, some components will coelute. The coelutions are resolved at the detector using VUV absorbance spectra and deconvolution algorithms. 1.6 This test method has been tested for aviation turbine engine fuels; the method may apply to other hydrocarbon streams boiling between hexane (68C) and heneicosane (356C), including sustainable alternative jet fuels but has not been extensively tested for such applications. 1.7 UnitsThe values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywordsjet fuel, avgas, naphthalene
Early in 2018, a key component of the Fluorescent Indicator Dyed Gel needed to perform Test Method D1319 became unavailable. An alternative dye was substituted, but the reformulated dyed gel was later found to be unsuitable for the analysis of jet fuel, diesel fuel and gasoline samples. As the manufacturer reformulated dye, if achieved, will not be available until well after 2019, Subcommittee J has been looking for alternative methods for the determination of aromatics in aviation fuels. The GC-VUV system has shown great promise in the determination of saturates, monoaromatics, and polynuclear aromatic content by carbon number in aviation fuels. For these reasons, this new standard is being developed to provide an suitable alternative to D1319.Back to Top