1.1 本试验方法包括通过气相色谱/质谱法（GC/MS）测定成品车用汽油中苯、甲苯、其他规定的单独芳香化合物和总芳香化合物的体积百分比，包括含含氧混合组分的汽油。计算苯、甲苯和总芳烃的精密度。 1.2 本试验方法已使用 D6300 -符合实验室间研究（ILS），最低和最高ILS样本平均值如下:苯，0.09 % 至4:00 %; 甲苯，1.0 % 至13.0 %; 和总（C6至C12）芳烃，10.0 % 至42.0 %. ILS研究未测试以下方法: 个人 炼油厂生产的烃工艺流，如重整油、流化催化裂化石脑油等，用于混合汽油。 1.3 报告的结果精确到0.01 % 对于苯和0.1 % 对于按液体体积计的其它芳族化合物。报告部分( 14 )描述了本试验方法的适用报告范围。 1.4 本试验方法包括基于实践的火花点火发动机燃料苯报告的试验方法间偏差部分 D6708 测试方法之间的评估 D5769 和测试方法 D3606 作为一种可能的测试方法 D5769 试验方法的替代方法 D3606 .实践 D6708 导出的相关方程仅适用于含苯的混合燃料。结果浓度范围为0.05%至2.50%（按体积计），通过试验方法测量和报告 D5769 . 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户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。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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 测定汽油中苯和芳烃含量的试验方法对于评估产品质量和满足燃料法规是必要的。 5.2 本试验方法可用于含有含氧化合物（醇和醚）作为添加剂的汽油。已确定，成品汽油中常见的含氧化合物不会干扰本试验方法对苯和其他芳烃的分析。

1.1 This test method covers the determination in volume percent of benzene, toluene, other specified individual aromatic compounds, and total aromatics in finished motor gasoline, including gasolines containing oxygenated blending components, by gas chromatography/mass spectrometry (GC/MS). Precision is calculated for benzene, toluene and total aromatics. 1.2 This test method has been evaluated using a D6300 -compliant Interlaboratory Study (ILS), with the lowest and highest ILS sample averages listed as follows: benzene, 0.09 % to 4.00 %; toluene, 1.0 % to 13.0 %; and total (C6 to C12) aromatics, 10.0 % to 42.0 %. The ILS study did not test the method for individual hydrocarbon process streams produced in a refinery, such as reformates, fluid catalytic cracked naphthas, and so forth, used in the blending of gasolines. 1.3 Results are reported to the nearest 0.01 % for benzene and 0.1 % for the other aromatics by liquid volume. The Report Section ( 14 ) describes the applicable reporting ranges of this test method. 1.4 This test method includes a between test method bias section for spark-ignition engine fuel benzene reporting based on Practice D6708 assessment between Test Method D5769 and Test Method D3606 as a possible Test Method D5769 alternative to Test Method D3606 . The Practice D6708 derived correlation equation is only applicable for blended fuels with benzene results concentration range from 0.05 % to 2.50 % by volume as measured and reported by Test Method D5769 . 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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 its use. 1.7 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 Test methods to determine benzene and the aromatic content of gasoline are necessary to assess product quality and to meet fuel regulations. 5.2 This test method can be used for gasolines that contain oxygenates (alcohols and ethers) as additives. It has been determined that the common oxygenates found in finished gasoline do not interfere with the analysis of benzene and other aromatics by this test method.