1.1 本试验方法涵盖并提供了通过多维气相色谱法定量测定终沸点低于215℃的轻质石油馏分中的总饱和物、总烯烃、总芳烃和苯。每个烃组以及苯可以以体积百分比和质量百分比报告。 1.2 本试验方法适用于轻质石油馏分，如不含氧的车用汽油或火花点火燃料、石脑油和烃类溶剂，含量范围为1%（V/V）至70%（V/V）总烯烃、1%（V/V）至80%（V/V）总芳烃和0.2%至10%（V/V）苯。该检测方法可能适用于这些范围之外的浓度，但精密度尚未确定。实验室间精密测试使用全范围混合流，如FCC、重整物和火花点火燃料或混合车用汽油。1.3 本试验方法不用于测定含氧组分。轻质石油馏分产品如车用汽油可能含有含氧化合物。含氧化合物如甲基 第三 -丁基醚(MTBE)， 第三 -戊基甲醚(TAME)、乙基 第三 -丁基醚(ETBE)、乙醇和甲醇等将与特定烃基共洗脱。如果怀疑样品含有含氧化合物，则应通过其他标准测试方法（如测试方法）确认不含含氧化合物 D4815 , D5599 ，或 D6839 在使用本测试方法之前。 1.4 本试验方法不适用于除苯以外的单个烃组分的测定。试验方法 D6733 可用于测定大量单个碳氢化合物，以补充该测试方法。1.5 以SI单位表示的值将被视为标准值。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性问题（如果有）。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法规限制的适用性。 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 烯烃、芳烃和苯含量的知识在石油产品的质量规范中非常重要，例如火花点火燃料（汽油）和碳氢化合物溶剂。快速准确地测定石油馏分和产品的烃类类型和苯在工艺装置优化中也很重要。 5.2 本试验方法提供了测定轻质无含氧石油馏分和产品中烃类类型和苯的快速标准程序。

1.1 This test method covers and provides for the quantitative determination of total saturates, total olefins, total aromatics and benzene in light petroleum distillates having a final boiling point below 215 °C by multidimensional gas chromatography. Each hydrocarbon grouping as well as benzene can be reported in both volume and mass percent. 1.2 This test method is applicable to light petroleum distillates such as oxygenate-free motor gasoline or spark ignition fuels, naphthas and hydrocarbon solvents over the content ranges from 1 % (V/V) to 70 % (V/V) total olefins, 1 % (V/V) to 80 % (V/V) total aromatics and 0.2 % to 10 % (V/V) benzene. This test method may apply to concentrations outside these ranges, but the precision has not been determined. Interlaboratory testing for precision used full range blending streams, such as FCC, reformates and spark ignition fuel or blended motor gasolines. 1.3 This test method is not intended to determine oxygenated components. Light petroleum distillate products such as motor gasoline may contain oxygenates. Oxygenates such as methyl tert -butyl ether (MTBE), tert -amyl methyl ether (TAME), ethyl tert -butyl ether (ETBE), ethanol and methanol etc. will coelute with specific hydrocarbon groups. If there is any suspicion the sample contains oxygenates, the absence of oxygenates should be confirmed by other standard test methods such as Test Methods D4815 , D5599 , or D6839 before using this test method. 1.4 This test method is not applicable for the determination of individual hydrocarbon components with the exception of benzene. Test Method D6733 may be used to determine a large number of individual hydrocarbons to complement this test method. 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 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 Knowledge of the olefinic, aromatic, and benzene content is very important in quality specifications of petroleum products, such as spark ignition fuels (gasoline) and hydrocarbon solvents. Fast and accurate determination of hydrocarbon types and benzene of petroleum distillates and products is also important in optimization of process units. 5.2 This test method provides a fast standard procedure for determination of hydrocarbon types and benzene in light oxygenate-free petroleum distillates and products.