Home/Applications/Astm D6591 Determination Of Aromatic Hydrocarbon Types

ASTM D6591 – Determination of Aromatic Hydrocarbon Types in Middle Distillates by High Performance Liquid Chromatography with Refractive Index Detection

Analyzer Description

HPLC Configuration:

Vacuum degasser, quaternary pump, automatic liquid sampler, thermostatted column compartment, 6-port switching valve, 2-columns, refractive index detector

Sample type:

Diesel fuels and petroleum distillates boiling in the range from 150° to 400° C

Compounds Separated:

Mono-aromatic hydrocarbons (MAH), di-aromatic hydrocarbons (DAH), poly-aromatic hydrocarbons (PAH)

Concentration Range:

4 to 40 mol% for mono-aromatic hydrocarbons

0 to 20 mol% for di-aromatic hydrocarbons

0 to 26 mol% polycyclic aromatic hydrocarbons

Methods met:

ASTM D6591, Wasson-ECE W1671

Typical Chromatogram

FID Chromatogram

Key Features and Benefits

  • The degasser reduces baseline drift and excessive noise.
  • A column switching valve is included for the selection of alternate analytical methods without the need to physically swap columns.
  • Approximately a 15 minute analysis time.
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