1.1 本试验方法包括测定沸点范围高达225℃的火花点火发动机燃料的单个碳氢化合物成分 °C.也可以分析炼油操作中通常遇到的其他轻液态烃混合物，例如混合原料（石脑油、重整油、烷基化物等）；然而，仅使用混合火花点火发动机燃料获得统计数据。中的表格 附件A1 列举报告的组件。成分浓度在0.10范围内测定 % 至15 % 按质量计算。该程序可适用于单个成分的较高和较低浓度；但是，如果程序用于浓度超过规定范围的成分，则用户必须验证准确性。 1.2 本试验方法也适用于含有含氧成分的火花点火发动机混合燃料。然而，在这种情况下，必须通过试验方法确定氧化物含量 D5599 或 D4815 . 1.3 苯与1-甲基环戊烯共洗脱。苯含量必须通过试验方法测定 D3606 或 D5580 . 1.4 甲苯与2,3,3-三甲基戊烷共洗脱。甲苯含量必须通过试验方法测定 D3606 或 D5580 . 1.5 虽然确定了存在的大多数单个碳氢化合物，但遇到了一些化合物的共洗脱。如果该程序用于估算散装烃族组成（PONA），则应提醒此类数据的用户，可能会因co引起错误- 洗脱和缺乏所有成分的鉴定。含有上述大量环烷（例如，未净化石脑油）成分的样品 n -辛烷值可能反映PONA类型分组中的重大错误。基于实验室间合作研究，该程序适用于烯烃浓度低于20的样品 % 按质量计算。然而，与C以上烯烃的显著干扰共溶 7. 这是可能的，尤其是如果对混合组分或其较高沸点馏分（如来自流化催化裂化（FCC）的组分）进行分析，并且总烯烃含量可能不准确。火花点火燃料中的许多烯烃浓度低于0。 10 %; 本试验方法未报告这些结果，可能导致总烯烃结果偏低。 1.5.1 样品中的总烯烃可通过试验方法获得或确认，或同时获得或确认 D1319号 （体积 %) 或其他测试方法，例如基于多维PONA类型仪器的测试方法。 1.6 如果存在或怀疑存在水，如果需要，可以使用试验方法测定其浓度 D1744 . 也可能存在其他含有硫、氮等的化合物，并可能与碳氢化合物共同洗脱。如果需要测定这些特定化合物，建议使用这些特定材料的试验方法，例如试验方法 D5623 对于含硫化合物。 1.7 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.8 本标准并非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制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.9 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 了解汽油燃料和混合油的单个组分组成（形态）有助于炼油厂质量控制和产品规范。许多单个碳氢化合物的过程控制和产品规范符合性可通过使用本试验方法来确定。

1.1 This test method covers the determination of individual hydrocarbon components of spark-ignition engine fuels with boiling ranges up to 225 °C. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such as, blending stocks (naphthas, reformates, alkylates, and so forth) may also be analyzed; however, statistical data was obtained only with blended spark-ignition engine fuels. The tables in Annex A1 enumerate the components reported. Component concentrations are determined in the range from 0.10 % to 15 % by mass. The procedure may be applicable to higher and lower concentrations for the individual components; however, the user must verify the accuracy if the procedures are used for components with concentrations outside the specified ranges. 1.2 This test method is applicable also to spark-ignition engine fuel blends containing oxygenated components. However, in this case, the oxygenate content must be determined by Test Methods D5599 or D4815 . 1.3 Benzene co-elutes with 1-methylcyclopentene. Benzene content must be determined by Test Method D3606 or D5580 . 1.4 Toluene co-elutes with 2,3,3-trimethylpentane. Toluene content must be determined by Test Method D3606 or D5580 . 1.5 Although a majority of the individual hydrocarbons present are determined, some co-elution of compounds is encountered. If this procedure is utilized to estimate bulk hydrocarbon group-type composition (PONA) the user of such data should be cautioned that error may be encountered due to co-elution and a lack of identification of all components present. Samples containing significant amounts of naphthenic (for example, virgin naphthas) constituents above n -octane may reflect significant errors in PONA type groupings. Based on the interlaboratory cooperative study, this procedure is applicable to samples having concentrations of olefins less than 20 % by mass. However, significant interfering coelution with the olefins above C 7 is possible, particularly if blending components or their higher boiling cuts such as those derived from fluid catalytic cracking (FCC) are analyzed, and the total olefin content may not be accurate. Many of the olefins in spark ignition fuels are at a concentration below 0.10 %; they are not reported by this test method and may bias the total olefin results low. 1.5.1 Total olefins in the samples may be obtained or confirmed, or both, by Test Method D1319 (volume %) or other test methods, such as those based on multidimensional PONA type of instruments. 1.6 If water is or is suspected of being present, its concentration may be determined, if desired, by the use of Test Method D1744 . Other compounds containing sulfur, nitrogen, and so forth, may also be present, and may co-elute with the hydrocarbons. If determination of these specific compounds is required, it is recommended that test methods for these specific materials be used, such as Test Method D5623 for sulfur compounds. 1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only. 1.8 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. 1.9 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 individual component composition (speciation) of gasoline fuels and blending stocks is useful for refinery quality control and product specification. Process control and product specification compliance for many individual hydrocarbons may be determined through the use of this test method.