Standard Test Method for Determination of Aromatic Hydrocarbon Types in Middle Distillates—High Performance Liquid Chromatography Method with Refractive Index Detection

Importancia y uso:

5.1 The aromatic hydrocarbon content of motor diesel fuel is a factor that can affect exhaust emissions and fuel combustion characteristics, as measured by cetane number.

5.2 The United States Environmental Protection Agency (US EPA) regulates the aromatic content of diesel fuels. California Air Resources Board (CARB) regulations place limits on the total aromatics content and polynuclear aromatic hydrocarbon content of motor diesel fuel, thus requiring an appropriate analytical determination to ensure compliance with the regulations.

5.3 This test method is applicable to materials in the same boiling range as motor diesel fuels and is unaffected by fuel coloration. Test Method D1319, which has been mandated by the US EPA for the determination of aromatics in motor diesel fuel, excludes materials with final boiling points greater than 315 °C (600 °F) from its scope. Test Method D2425 is applicable to the determination of both total aromatics and polynuclear aromatic hydrocarbons in diesel fuel, but is much more costly and time consuming to perform. Test Method D5186, currently specified by CARB, is also applicable to the determination of both total aromatics and polynuclear aromatic hydrocarbons in diesel fuel. Test Method D5186, however, specifies the use of supercritical fluid chromatography equipment that may not be readily available.

Note 2: Test Method D5186 was previously specified by CARB as an alternative to Test Method D1319.

Subcomité:

D02.04.0C

Referida por:

D6379-21E01, D6379-21E01, D5186-24, D5186-24, D5186-24, D8578-24, D6379-21E01

Volúmen:

05.03

Número ICS:

71.040.50 (Physicochemical methods of analysis)

Palabras clave:

aromatic hydrocarbons; aromatics; diesel fuel; high performance liquid chromatography; hydrocarbon types; petroleum distillates; refractive index detection; total aromatics in fuel;