1.1 本试验方法涵盖了使用气相色谱法和真空紫外吸收光谱检测（GC-VUV）测定柴油中芳香族、多芳香族和FAME含量的基团类型总数的标准程序。 1.1.1 多芳香族总量是二芳香族和三加芳香族基团类型总和的结果。芳香族是单芳香族和多芳香族基团类型的总和。FAME含量是单个脂肪酸甲酯的总和。 1.1.2 本试验方法适用于来自加氢处理植物油（HVO）或动物脂肪、气-液（GTL）柴油、轻循环油、宽沸点芳香族溶剂和生物柴油混合物的可再生柴油。 1.2 组类型总计的浓度由质量百分比或体积百分比确定。适用的工作范围如下: 总芳烃%体积 0.088至77.000 总芳烃%质量 0.104至79.451 单芳烃%质量 0.076至67.848 双色差%质量 0.027至34.812 三加芳烃%质量 0.45至6.77 PAH%质量 0.028至41.586 FAME%体积 1.08至21.67 1.3 含有生物柴油的柴油（FAME，即脂肪酸甲酯，包括大豆甲酯、油菜籽甲酯、牛脂甲酯和菜籽油甲酯）可通过该测试方法进行分析。FAME组分完全从分析柱中洗脱，与原料无关。 1.4 本试验方法未报告单个碳氢化合物成分；然而，任何单独的组分测定都包含在芳香族、多芳香族、单芳香族、二芳香族、三加芳香族或FAME基团的总和中。 1.4.1 单个部件通常不通过本测试方法中描述的程序进行基线分离。使用VUV吸收光谱和反褶积算法在检测器处解析系数。 1.5 本试验方法可适用于庚烷（98 °C）和三十烷（450 °C），但尚未对此类应用进行广泛测试。 1.6 单位- 以国际单位表示的值应视为标准值。本标准不包括其他计量单位。 1.7 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 确定柴油的组分类型有助于评价柴油的质量和预期性能。芳香族化合物和多芳香族化合物尤其与燃烧特性、十六烷值、能量含量、润滑性、水溶性和废气排放有关。 5.1.1 芳烃类型分析可用于评估炼油工艺。 5.1.2 在FAME存在下测定芳烃含量的能力可能对柴油燃料的使用者有用。

1.1 This test method covers a standard procedure for the determination of group type totals of aromatic, polyaromatic, and FAME content in diesel fuel using gas chromatography and vacuum ultraviolet absorption spectroscopy detection (GC-VUV). 1.1.1 Polyaromatic totals are the result of the summation of diaromatic and tri-plus aromatic group types. Aromatics are the summation of monoaromatic and polyaromatic group types. FAME content is the result of summation of individual fatty acid methyl esters. 1.1.2 This test method is applicable for renewable diesel fuels from hydrotreated vegetable oil (HVO) or animal fat, gas to liquid (GTL) diesel, light cycle oil, wide boiling range aromatic solvents and biodiesel blends. 1.2 Concentrations of group type totals are determined by percent mass or percent volume. The applicable working ranges are as follows: Total Aromatics %Volume 0.088 to 77.000 Total Aromatics %Mass 0.104 to 79.451 MonoAromatics %Mass 0.076 to 67.848 Diaromatics %Mass 0.027 to 34.812 Tri-plus aromatics %Mass 0.45 to 6.77 PAH %Mass 0.028 to 41.586 FAME %Volume 1.08 to 21.67 1.3 Diesel fuel containing biodiesel, (FAME, that is, fatty acid methyl esters including soy methyl esters, rapeseed methylesters, tallow methylesters and canola methylesters) can be analyzed by this test method. The FAME component completely elutes from the analytical column independent of feedstock. 1.4 Individual hydrocarbon components are not reported by this test method; however, any individual component determinations are included in the appropriate summation of the totals of aromatic, polyaromatic, monoaromatic, diaromatic, tri-plus aromatic, or FAME groups. 1.4.1 Individual components are typically not baseline-separated by the procedure described in this test method. The coelutions are resolved at the detector using VUV absorbance spectra and deconvolution algorithms. 1.5 This test method may apply to other hydrocarbon streams boiling between heptane (98 °C) and triacontane (450 °C), but has not been extensively tested for such applications. 1.6 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The determination of group type composition of diesel fuel is useful for evaluating quality and expected performance. Aromatics and polyaromatics, in particular, are related to combustion characteristics, cetane number, energy content, lubricity, water solubility and exhaust emissions. 5.1.1 Aromatic hydrocarbon type analysis may be useful for evaluating refinery processes. 5.1.2 The ability to determine aromatics content in the presence of FAME may be useful to users of diesel fuel.