1.1 本试验方法包括使用质谱仪测定沸点范围为160的常规碳氢化合物和合成碳氢化合物中存在的碳氢化合物类型的分析方案 °C至343 °C（320 °F至650 °F），5 % 至95 % 按体积  由试验方法确定 D86 .链烷烃的平均碳数值在C之间的样品 12 和C 16 并且含有来自C的链烷烃 10 和C 18 可以进行分析。确定了11种碳氢化合物类型。这些包括:链烷烃、非稠环烷烃、稠二环链烷烃、稠三环链烷烃、烷基苯、茚或四氢萘，或两者，C n H 2. n -10 （茚等）、萘、C n H 2. n -14 （苊等），C n H 2. n -16 （苊等）和三环芳烃。 注1: 该试验方法是在Consolidated Electrodynamics Corporation 103型质谱仪上开发的。提供了四极质谱仪用户的操作参数。 1.2 本试验方法适用于不含显著烯烃含量的全沸程产品。 生物柴油（FAME组分）可能会干扰样品的分离，且程序中未定义FAME化合物的特征质量片段。 有时在合成航空燃料中发现的含有叔碳片段的碳氢化合物会干扰链烷烃的特征质量片段，并导致环烷烃含量虚假升高。 注2: 该方法的“无显著烯烃含量”是指<2.0 % 按体积（按试验方法） D1319 . 1.3 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.4 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。 有关特定的警告语句，请参阅 11.1 . 1.5 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 对沸腾在160范围内的工艺流和石油产品的碳氢化合物组成的了解 °C至343 °C（320 °F至650 °F）有助于跟踪过程变量变化的影响，诊断工厂故障的来源，并评估成分变化对产品性能特性的影响。 5.2 为了满足含有合成碳氢化合物的航空涡轮燃料的规范，有必要采用测定总环芳烃和低水平芳烃含量的试验方法。

1.1 This test method covers an analytical scheme using the mass spectrometer to determine the hydrocarbon types present in conventional and synthesized hydrocarbons that have a boiling range of 160 °C to 343 °C (320 °F to 650 °F), 5 % to 95 % by volume  as determined by Test Method D86 . Samples with average carbon number value of paraffins between C 12 and C 16 and containing paraffins from C 10 and C 18 can be analyzed. Eleven hydrocarbon types are determined. These include: paraffins, noncondensed cycloparaffins, condensed dicycloparaffins, condensed tricycloparaffins, alkylbenzenes, indans or tetralins, or both, C n H 2 n -10 (indenes, etc.), naphthalenes, C n H 2 n -14 (acenaphthenes, etc.), C n H 2 n -16 (acenaphthylenes, etc.), and tricyclic aromatics. Note 1: This test method was developed on Consolidated Electrodynamics Corporation Type 103 Mass Spectrometers. Operating parameters for users with a Quadrupole Mass Spectrometer are provided. 1.2 This test method is intended for use with full boiling range products that contain no significant olefin content. Biodiesel (FAME components) could interfere with the separation of the sample and the characteristic mass fragments of FAME compounds are not defined in the procedure. Hydrocarbons containing tertiary carbon fragments, sometimes found in synthetic aviation fuels, will interfere with the characteristic mass fragments of paraffins and result in a false, elevated cycloparaffin content. Note 2: “No significant olefin content” for this method means <2.0 % by volume by Test Method D1319 . 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.4 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. For a specific warning statement, see 11.1 . 1.5 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 A knowledge of the hydrocarbon composition of process streams and petroleum products boiling within the range of 160 °C to 343 °C (320 °F to 650 °F) is useful in following the effect of changes in process variables, diagnosing the source of plant upsets, and in evaluating the effect of changes in composition on product performance properties. 5.2 A test method to determine total cycloparafins and low level aromatic content is necessary to meet specifications for aviation turbine fuel containing synthesized hydrocarbons.