1.1 本试验方法包括测定汽油和液体汽油混合成分的沸腾范围分布。它适用于最终沸点为280的石油产品和馏分 °C（536 °F）或更低。 1.2 该试验方法旨在测量高或低蒸汽压下汽油和汽油组分的整个沸腾范围，通常称为气相色谱仪模拟蒸馏（SimDis）。 1.3 该试验方法已针对含乙醇的汽油进行了验证。未明确排除含有其他含氧化合物的汽油，但在本试验方法的开发中未使用这些汽油。 1.4 该测试方法可以估计 n -汽油中的戊烷和较轻的饱和烃。 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。 1.5.1 在计算沸点保留时间相关性时，只需替换华氏沸点即可获得以华氏度为单位的结果。 1.6 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。 1.7 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 通过气相色谱模拟蒸馏测定汽油的沸点分布，可以深入了解混合汽油的成分组成。了解汽油混合组分的沸腾范围分布有助于控制炼油过程和混合成品汽油。 5.2 用气相色谱模拟蒸馏法测定轻烃混合物的沸程分布比用试验方法测定传统蒸馏法具有更好的精度 D86 . 此外，该测试方法提供了关于光端组成的更准确和详细信息。该试验方法产生的蒸馏数据类似于从低温真沸点（15个理论板）蒸馏中获得的数据。

1.1 This test method covers the determination of the boiling range distribution of gasoline and liquid gasoline blending components. It is applicable to petroleum products and fractions with a final boiling point of 280 °C (536 °F) or lower, as measured by this test method. 1.2 This test method is designed to measure the entire boiling range of gasoline and gasoline components with either high or low vapor pressure and is commonly referred to as Simulated Distillation (SimDis) by gas chromatographers. 1.3 This test method has been validated for gasoline containing ethanol. Gasolines containing other oxygenates are not specifically excluded, but they were not used in the development of this test method. 1.4 This test method can estimate the concentration of n -pentane and lighter saturated hydrocarbons in gasoline. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5.1 Results in degrees Fahrenheit can be obtained by simply substituting Fahrenheit boiling points in the calculation of the boiling point-retention time correlation. 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 The determination of the boiling range distribution of gasoline by gas chromatographic simulated distillation provides an insight into the composition of the components from which the gasoline has been blended. Knowledge of the boiling range distribution of gasoline blending components is useful for the control of refinery processes and for the blending of finished gasoline. 5.2 The determination of the boiling range distribution of light hydrocarbon mixtures by gas chromatographic simulated distillation has better precision than the conventional distillation by Test Method D86 . Additionally, this test method provides more accurate and detailed information about the composition of the light ends. The distillation data produced by this test method are similar to that which would be obtained from a cryogenic, true boiling point (15 theoretical plates) distillation.