标准编号：ISO 20884:2011
中文名称：石油产品 汽车燃料的硫含量测定 波长色散X射线荧光光谱法
英文名称：Petroleum products — Determination of sulfur content of automotive fuels — Wavelength-dispersive X-ray fluorescence spectrometry
发布日期：2011-04
标准范围
This International Standard specifies a wavelength-dispersive X-ray fluorescence (WDXRF) test method forthe determination of the sulfur content of liquid, homogeneous automotive fuels from 5 mg/kg to 500 mg/kg,which have a maximum oxygen content of 3,7 % (m/m). This product range covers diesel fuels containing upto about 10 % (V/V) fatty acid methyl esters (FAME) and motor gasolines containing up to about 10 % (V/V)ethanol.NOTE 1 Sulfur contents higher than 500 mg/kg can be determined after sample dilution. However, the precision wasnot established for diluted samples.Products with higher oxygen content show significant matrix effects, e.g. FAME used as biodiesel.Nevertheless, FAME may be analysed when the corresponding procedures are followed (see 4.3 and 7.1).Other products may be analysed with this test method. However, precision data for products other than thosementioned have not been established for this International Standard.NOTE 2 For the purposes of this International Standard, the terms “% (m/m)” and “% (V/V)” are used to represent themass fraction and the volume fraction of a material respectively.
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