GB/T 25963-2022 Active
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
Abstract
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
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 25963-2022 |
| CCS | Fuel oil |
| ICS | \nLiquid fuel |
| Implement Date | 2022-10-12 |