GB/T 25963-2022 Active National standards

GB/T 25963-2022 Determination of aromatic hydrocarbon types in middle distillates containing fatty acid methyl esters—High performance liquid chromatography method with refractive index detection

Publish Date: 2022-10-12 Implement Date: 2022-10-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 66

Download

Basic Information

Standard Code: GB/T 25963-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Fuel oil

ICS Name: \nLiquid fuel

Publish Date: 2022-10-12

Implement Date: 2022-10-12

Pages: 16 pages

Scope

This document describes the test method for determining the content of aromatic hydrocarbons in middle distillates using high-performance liquid chromatography with a differential refractive index detector.
This document is applicable to the determination of the content of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons, and tricyclic+ aromatic hydrocarbons in diesel with a fatty acid methyl ester (FAME) volume fraction of not more than 30%, diesel with a FAME volume fraction of not more than 7%, and petroleum distillates with a distillation range of 150 ℃~400 ℃. The content of polycyclic aromatic hydrocarbons is obtained by adding the content of bicyclic aromatic hydrocarbons and tricyclic+ aromatic hydrocarbons, and the total aromatic hydrocarbon content is obtained by adding the content of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons, and tricyclic+ aromatic hydrocarbons.
This document includes two steps: Step A and Step B. Step A is applicable to the determination of the content of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons, and tricyclic+ aromatic hydrocarbons in diesel with a FAME volume fraction of not more than 30% and petroleum distillates with a distillation range of 150 ℃~400 ℃, where the content of monocyclic aromatic hydrocarbons (mass fraction) is 6%~30%, the content of bicyclic aromatic hydrocarbons (mass fraction) is 1%~10%, the content of tricyclic+ aromatic hydrocarbons (mass fraction) is 0%~2%, the content of polycyclic aromatic hydrocarbons (mass fraction) is 1%~12%, and the total aromatic hydrocarbon content (mass fraction) is 7%~42%. Step B is applicable to the determination of the content of aromatic hydrocarbons in diesel with a FAME volume fraction of not more than 7%, and the total aromatic hydrocarbon content (mass fraction) is 0.2%~2%.
Note: Generally, the type of aromatic hydrocarbons is defined based on their elution properties on a specific liquid chromatograp