ISO 20846:2019 石油产品 汽车燃料硫含量的测定 紫外荧光法

标准编号：ISO 20846:2019

中文名称：石油产品 汽车燃料硫含量的测定 紫外荧光法

英文名称：Petroleum products — Determination of sulfur content of automotive fuels — Ultraviolet fluorescence method

发布日期：2019-08

标准范围

本文件规定了测定下列产品硫含量的紫外（UV）荧光试验方法:-具有在3mg/kg至500mg/kg范围内的硫含量，-含有至多3.7%(m/m)氧的车用汽油[包括与至多约10%(V/V)的乙醇混合的那些]，-柴油燃料，包括含有至多约30%(V/V)脂肪酸甲酯(FAME)的那些，-具有在3mg/kg至45mg/kg范围内的硫含量，-合成燃料，例如加氢处理植物油(HVO)和气制液(GTL)。根据该测试方法，可以分析其他产品并测定其他硫含量，但是，本文件没有建立除汽车燃料以外的产品和超出规定范围的结果的精密度数据。卤素在浓度高于约3 500 mg/kg时干扰该检测技术。注1当原料中含有微量含硫物质时，石油和化工精炼中使用的一些工艺催化剂可能会中毒。注2本试验方法可用于测定工艺进料中的硫，也可用于控制流出物中的硫。注3就本文件而言，“%(m/m)”和“%(V/V)”分别用于表示材料的质量分数w和体积分数φ。注4乙醇中的硫酸盐物质与乙醇中的有机硫的转化率不同。然而，硫酸盐具有接近有机硫的转化率。注5可能发生氮气干扰，进一步指导见6.5。

This document specifies an ultraviolet (UV) fluorescence test method for the determination of the sulfur content of the following products:— having sulfur contents in the range 3 mg/kg to 500 mg/kg,

• — motor gasolines containing up to 3,7 % (m/m) oxygen [including those blended with ethanol up to about 10 % (V/V)],
• — diesel fuels, including those containing up to about 30 % (V/V) fatty acid methyl ester (FAME),

— having sulfur contents in the range of 3 mg/kg to 45 mg/kg,

• — synthetic fuels, such as hydrotreated vegetable oil (HVO) and gas to liquid (GTL).

Other products can be analysed and other sulfur contents can be determined according to this test method, however, no precision data for products other than automotive fuels and for results outside the specified range have been established for this document. Halogens interfere with this detection technique at concentrations above approximately 3 500 mg/kg.NOTE 1 Some process catalysts used in petroleum and chemical refining can be poisoned when trace amounts of sulfur-bearing materials are contained in the feedstocks.NOTE 2 This test method can be used to determine sulfur in process feeds and can also be used to control sulfur in effluents.NOTE 3 For the purposes of this document, "% (m/m)" and "% (V/V)" are used to represent the mass fraction, w, and the volume fraction, φ, of a material respectively.NOTE 4 Sulfate species in ethanol do not have the same conversion factor of organic sulfur in ethanol. Nevertheless, sulfates have a conversion factor close to that of organic sulfur.NOTE 5 Nitrogen interference can occur, see 6.5 for further guidance.

标准预览图