Standard Test Method for Hydrocarbon Types in Middle Distillates, including Biodiesel Blends by Gas Chromatography/Mass Spectrometry
Importancia y uso:
5.1 A knowledge of the hydrocarbon composition of the middle distillates, including the biodiesel blends is useful in following the effect of changes in process variables, diagnosing the source of plant upsets, and in evaluating the effect of changes in composition on product performance properties. The total aromatics content and polycyclic aromatics content are also important to evaluate the quality of diesel fuels/biodiesel blends. It requires an appropriate analytical method to make such determinations for diesel fuel/biodiesel blends production process and quality control.
5.2 This test method provides a comprehensive analytical strategy for the determination of the total aromatics contents, polycyclic aromatics contents and the detail hydrocarbon composition of diesel fuel/biodiesel blends to ensure compliance with certain specifications or regulations.
5.3 Test Method D2425 is applicable to the determination of the detailed hydrocarbon composition in middle distillates, however, the pre-separation procedure of elution chromatography is time-consuming and not eco-friendly. By combining with the separation procedures described in Test Method D8144, the dual column GC-MS system proposed in this method can determine the total aromatic hydrocarbon contents, polycyclic aromatic hydrocarbon contents and detailed hydrocarbon composition of diesel fuel/biodiesel blends simultaneously. The content of FAME in biodiesel blends can also be determined by GC. It is demonstrated to be time-saving and eco-friendly for the quality control of diesel fuel and biodiesel blends.
Subcomité:
D02.04.0M
Volúmen:
05.05
Número ICS:
75.160.20 (Liquid fuels)
Palabras clave:
aromatics; biodiesel blends; gas chromatography/mass spectrometry (GC-MS); hydrocarbon types; middle distillates; polycyclic aromatics; total aromatics;
$ 1,092
Norma
D8276
Versión
19(2024)
Estatus
Active
Clasificación
Test Method
Fecha aprobación
2024-03-15
