ISO 20884-2011 石油产品.机动车燃料的硫含量的测定.波长色散X射线荧光光谱法

标准号：ISO 20884-2011
中文标准名称：石油产品.机动车燃料的硫含量的测定.波长色散X射线荧光光谱法
英文标准名称：Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry
标准类型：E31
发布日期：2011/4/15 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：E31
国际标准分类号：75.160.30
引用标准：ISO 3170;ISO 3171
适用范围：WARNING — The use of this International Standard may involve hazardous materials, operations andequipment. This International Standard does not purport to address all of the safety problemsassociated with its use. It is the responsibility of the user of this International Standard to establishappropriate safety and health practices and determine the applicability of regulatory limitations priorto use.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.