This document specifies an energy dispersive X-ray fluorescence (EDXRF) test method for the determination of sulfur content in automotive fuels. This document is applicable to:— gasoline containing up to 3,7 % oxygen by mass (including those blended with ethanol up to 10 % by volume) having sulfur contents in the range of 6,9 mg/kg to 56,7 mg/kg,— diesel fuels including those containing up to about 30 % fatty acid methyl ester (FAME) by volume, paraffinic diesel fuel, and neat FAME, having sulfur contents in the range of 5,0 mg/kg to 60,2 mg/kg.The sulfur content in other products can be determined according to the test method specified in this document; however, no precision data for products other than automotive fuels and for results outside the specified range have been established for this document.For reasons of spectral overlap, this document is not applicable to leaded automotive gasoline, gasoline having a content of greater than 8 mg/kg lead or to product and feedstock containing lead, silicon, phosphorus, calcium, potassium or halides at concentrations greater than one tenth of the concentration of sulfur measured, or more than 10 mg/kg, whichever is the greater.
This document specifies an energy dispersive X-ray fluorescence (EDXRF) test method for the determination of sulfur content in automotive fuels. This document is applicable to:
— gasoline containing up to 3,7 % oxygen by mass (including those blended with ethanol up to 10 % by volume) having sulfur contents in the range of 6,9 mg/kg to 56,7 mg/kg,
— diesel fuels including those containing up to about 30 % fatty acid methyl ester (FAME) by volume, paraffinic diesel fuel, and neat FAME, having sulfur contents in the range of 5,0 mg/kg to 60,2 mg/kg.
The sulfur content in other products can be determined according to the test method specified in this document; however, no precision data for products other than automotive fuels and for results outside the specified range have been established for this document.
For reasons of spectral overlap, this document is not applicable to leaded automotive gasoline, gasoline having a content of greater than 8 mg/kg lead or to product and feedstock containing lead, silicon, phosphorus, calcium, potassium or halides at concentrations greater than one tenth of the concentration of sulfur measured, or more than 10 mg/kg, whichever is the greater.
L'ISO 13032:2012 spécifie une méthode d'essai par fluorescence de rayons X dispersive en énergie (FXDE) pour le dosage du soufre dans l'essence pour automobiles contenant jusqu'à 3,7 % (m/m) d'oxygène [y compris celle contenant de l'éthanol jusqu'à 10 % (V/V)], et dans les carburants diesels [y compris ceux contenant jusqu'à 10 % (V/V) d'esters méthyliques d'acide gras (EMAG)] ayant des teneurs en soufre comprises entre 8 mg/kg et 50 mg/kg. D'autres produits peuvent être analysés et d'autres teneurs en soufre peuvent être déterminées suivant cette méthode; cependant, il n'a pas été établi de données de fidélité pour des produits autres que les carburants pour automobiles et pour des résultats en dehors du domaine spécifié pour l'ISO 13032:2012. En raison de recouvrements spectraux, l'ISO 13032:2012 n'est pas applicable à l'essence pour automobiles contenant du plomb, ni à l'essence contenant un substitut de plomb dont la teneur en plomb est supérieure à 8 mg/kg, ni aux produits et charges contenant du plomb, du silicium, du phosphore, du calcium, du potassium ou des halogénures à des concentrations qui dépassent le dixième de la teneur en soufre mesurée, ou plus de 10 mg/kg, en choisissant la plus grande de ces valeurs.
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