GB/T 25963-2022Determination of aromatic hydrocarbon types in middle distillates containing fatty acid methyl esters - High performance liquid chromatography method with refractive index detection (English PDF)
含脂肪酸甲酯中间馏分芳烃含量的测定 示差折光检测器高效液相色谱法
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for GB/T 25963-2022 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 12, 2022
Implementation date
October 12, 2022
Scope
GB/T 25963-2022 is the English-translated version of 含脂肪酸甲酯中间馏分芳烃含量的测定 示差折光检测器高效液相色谱法.
GB/T 25963-2022 is the Chinese standard "Determination of aromatic hydrocarbon types in middle distillates containing fatty acid methyl esters - High performance liquid chromatography method with refractive index detection".
Its scope clause reads: This document describes a test method for the determination of aromatics content in middle distillates by high performance liquid chromatography with a refractive index detector.
This document is applicable to the determination of diesel fuel containing fatty acid methyl ester (FAME) not more than 30% by volume, fatty acid methyl ester (FAME) containing Monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons in high-wax diesel oil with an integral fraction of not more than 7% and petroleum fractions with a distillation range of 150°C~400°C content.
The content of polycyclic aromatic hydrocarbons was obtained by summing the contents of bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons, and the total aromatic hydrocarbon content was determined by the sum of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons.
The content of cyclic aromatic hydrocarbons is obtained by summation. This document contains two steps.
Step A and Step B. Step A is suitable for determining the volume fraction of fatty acid methyl esters (FAME) not greater than The content of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons in 30% diesel oil and petroleum fractions with a distillation range of 150 °C ~ 400 °C, of which monocyclic aromatic hydrocarbons Hydrocarbon content (mass fraction) is 6%~30%, bicyclic aromatic hydrocarbon content (mass fraction) is 1%~10%, tricyclic aromatic hydrocarbon content (mass fraction) 0%~2%, polycyclic aromatic hydrocarbon content (mass fraction) 1%~12%, total aromatic hydrocarbon content (mass fraction) 7%~42%.
Step B is suitable It is used to determine the content of aromatics in high-wax diesel oil with a volume fraction of fatty acid methyl esters (FAME) not greater than 7%.
The total aromatics content (mass fraction) is 0.2%~2%. NOTE. Typically, aromatic hydrocarbon types are defined based on their elution properties on a particular LC column compared to model compounds.
Monocyclic aromatic hydrocarbons, bicyclic The content of aromatics and tricyclic aromatics was quantified using the working curve of the external standard. In this document, one for each of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons is used.
Aromatic compounds alone act as external standards, and these compounds may (may not be) representative of the aromatics present in the sample. Other methods for each aromatic Definition and quantification of hydrocarbon types may differ from this method.
For example, the refractive index of tetrahydronaphthalene is higher than that of o-xylene, and the refractive index of n-hexylbenzene is lower than that of o-xylene.
The differences in the contents of benzene, tetrahydronaphthalene and n-hexylbenzene in the samples may cause the quantitative results of monocyclic aromatic hydrocarbons in this method to be inconsistent with the actual situation. Its clauses include terms and definitions.
Found what you need?
Document preview — GB/T 25963-2022
National Standard of the People's Republic of China
- ICS
- 75.160.20
- Classification
- E 31
- Replacing
- GB/T 25963-2010
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
1 Scope
This document describes a test method for the determination of aromatics content in middle distillates by high performance liquid chromatography with a refractive index detector.
This document is applicable to the determination of diesel fuel containing fatty acid methyl ester (FAME) not more than 30% by volume, fatty acid methyl ester (FAME) containing
Monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons in high-wax diesel oil with an integral fraction of not more than 7% and petroleum fractions with a distillation range of 150°C~400°C content. The content of polycyclic aromatic hydrocarbons was obtained by summing the contents of bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons, and the total aromatic hydrocarbon content was determined by the sum of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons.
The content of cyclic aromatic hydrocarbons is obtained by summation.
This document contains two steps. Step A and Step B. Step A is suitable for determining the volume fraction of fatty acid methyl esters (FAME) not greater than
The content of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons in 30% diesel oil and petroleum fractions with a distillation range of 150 °C ~ 400 °C, of which monocyclic aromatic hydrocarbons
Hydrocarbon content (mass fraction) is 6%~30%, bicyclic aromatic hydrocarbon content (mass fraction) is 1%~10%, tricyclic aromatic hydrocarbon content (mass fraction)
0%~2%, polycyclic aromatic hydrocarbon content (mass fraction) 1%~12%, total aromatic hydrocarbon content (mass fraction) 7%~42%. Step B is suitable
It is used to determine the content of aromatics in high-wax diesel oil with a volume fraction of fatty acid methyl esters (FAME) not greater than 7%. The total aromatics content (mass fraction) is
0.2%~2%.
NOTE. Typically, aromatic hydrocarbon types are defined based on their elution properties on a particular LC column compared to model compounds. Monocyclic aromatic hydrocarbons, bicyclic
The content of aromatics and tricyclic aromatics was quantified using the working curve of the external standard. In this document, one for each of monocyclic aromatic hydrocarbons, bicyclic aromatic hydrocarbons and tricyclic aromatic hydrocarbons is used.
Aromatic compounds alone act as external standards, and these compounds may (may not be) representative of the aromatics present in the sample. Other methods for each aromatic
Definition and quantification of hydrocarbon types may differ from this method. For example, the refractive index of tetrahydronaphthalene is higher than that of o-xylene, and the refractive index of n-hexylbenzene is lower than that of o-xylene.
The differences in the contents of benzene, tetrahydronaphthalene and n-hexylbenzene in the samples may cause the quantitative results of monocyclic aromatic hydrocarbons in this method to be inconsistent with the actual situation.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
GB/T 4756 Petroleum liquid manual sampling method
GB/T 12806-2011 Laboratory glass instrument single-line volumetric flask
GB 25199 B5 diesel
GB/T 27867 Petroleum liquid pipeline automatic sampling method
NB/SH/T 0843 Evaluation Statistical Techniques for Analytical Testing Systems in the Petrochemical Industry
3 Terms and Definitions
The following terms and definitions apply to this document.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 25963
| Edition | Title | Revision | Status |
|---|---|---|---|
| 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 | current edition | Current |
| GB/T 25963-2010 | Determination of aromatic hydrocarbon types in middle distillates containing fatty acid methyl esters - High performance liquid chromatography method with refractive index detection | previous edition | Superseded |
This page sells the current edition, GB/T 25963-2022. Earlier editions are listed for reference only.
How to Download GB/T 25963-2022
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB 25199-2017 — B5 diesel fuels
GB 25199-2026 — Biodiesel blended automotive diesel fuel
GB/T 12806-2011 — Laboratory glassware -- One-mark volumetric flasks
Secure payment via Stripe
Payments accepted
GB/T 25963-2022
$240.00