標準號：ISO 20884-2011
中文標準名稱：石油產品.機動車燃料的硫含量的測定.波長色散X射線熒光光譜法
英文標準名稱：Petroleum products - Determination of sulfur content of automotive fuels - Wavelength-dispersive X-ray fluorescence spectrometry
標準類型：E31
發布日期：2011/4/15 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：E31
國際標準分類號：75.160.30
引用標準：ISO 3170;ISO 3171
適用范圍：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.