What is ISO 22854 about?
ISO 22854 specifies the gas chromatographic (GC) method for the determination of saturated, olefinic and aromatic hydrocarbons in automotive motor gasoline and ethanol (E85) automotive fuel. Additionally, the benzene and toluene content, oxygenated compounds and the total oxygen content can be determined.
ISO 22854 defines two procedures, A and B.
Procedure A is applicable to automotive motor gasoline with total aromatics of 19,32 % (V/V) up to 46,29 % (V/V); total olefins from 0,40 % (V/V) up to 26,85 % (V/V); oxygenates from 0,61 % (V/V) up to 9,85 % (V/V); oxygen content from 1,50 % (m/m) to 12,32 % (m/m); benzene content from 0,38 % (V/V) up to 1,98 % (V/V) and toluene content from 5,85 % (V/V) up to 31,65 % (V/V).
Procedure B describes the analysis of oxygenated groups (ethanol, methanol, ethers, C3 – C5 alcohols) in ethanol (E85) automotive fuel containing ethanol between 50 % (V/V) and 85 % (V/V). The gasoline is diluted with an oxygenate-free component to lower the ethanol content to a value below 20 % (V/V) before the analysis by GC.
NOTE 1: For ISO 22854, the terms % (m/m) and % (V/V) are used to represent respectively the mass fraction, w, and the volume fraction, φ.
Who is ISO 22854 for?
ISO 22854 on the multidimensional gas chromatography method is relevant to:
- Petroleum and natural gas industry
- Automobile industries
- Laboratories and R&D
Why should you use ISO 22854?
Gas chromatography is one of the most widely used techniques in modern analytical chemistry. It is used for determining the concentrations of certain chemicals, contaminants in the fuel.
ISO 22854 provide information on apparatus, sampling, procedure, and calculation required to determine hydrocarbon types and oxygenates in automotive-motor gasoline and ethanol (e85) automotive fuel.
ISO 22854 assists the user to improve the quality of automotive fuel which helps them to increase their sales and widens the market reach for the product. With a high quality of fuel, the user will be able to build consumer trust and confidence in their product.
What’s changed since the last update?
BS EN ISO 22854:2021 supersedes EN ISO 22854:2016.
The main changes compared to the previous edition are as follows:
- The Scope and precision have been extended in the concentration range
- The precision statement has been updated
- New examples of typical chromatograms have been added to Annex B
- The text has been further harmonized with ASTM D6839