IP 408: Liquid petroleum products - Unleaded petrol - Determination of organic oxygenate compounds and total organically bound oxygen content by gas chromatography (O-FID)

Overview:

Scope

This European Standard specifies a gas chromatographic method for the quantitative determination, in unleaded petrol having a final boiling point not greater than 220 °C, of individual organic oxygenate compounds in the range 0,17 % (m/m) to 15 % (m/m) in a direct analysis (without dilution), and total organically bound oxygen up to 3,9 % (m/m).

For samples for which one of the oxygenate compounds content is higher than 15 % (m/m), a procedure with a dilution of the sample before the analysis is given.

NOTE 1 The conversion from percent mass to percent volume is done using the calculation mentioned in 8.3 and 9.5.3.

NOTE 2 Precision data are not available for an oxygenate compound content higher than 15 % (m/m); see Introduction.

NOTE 3 For the purposes of this European Standard, the terms '% (m/m)' and '% (V/V)' are used to represent respectively the mass fraction, μ, respectively the volume fraction, ϕ.