1.1 本试验方法包括航空涡轮燃料中氢含量的测定。 1.2 使用测试方法 D4808 或 D7171 用于测定其他石油液体中的氢。 1.3 以国际单位制表示的数值应视为标准。优选的单元是氢的质量百分比。 1.4 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 7.1 。 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 传统上，航空涡轮燃料的燃烧质量是通过烟点等测试来控制的（见测试方法 D1322 )，烟雾挥发性指数，光度计数值的芳香含量（见试验方法 D1740 )。越来越多的证据表明，通过限制燃料的最小氢含量，可以获得更好的质量控制。 5.2 现有的方法允许从其他参数计算氢含量或通过燃烧技术确定氢含量。指定的方法为这些方法提供了一种快速、简单、更精确的替代方法。

1.1 This test method covers the determination of the hydrogen content of aviation turbine fuels. 1.2 Use Test Methods D4808 or D7171 for the determination of hydrogen in other petroleum liquids. 1.3 The values stated in SI units are to be regarded as standard. The preferred units are mass percent hydrogen. 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 7.1 . 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 The combustion quality of aviation turbine fuel has traditionally been controlled in specifications by such tests as smoke point (see Test Method D1322 ), smoke volatility index, aromatic content of luminometer number (see Test Method D1740 ). Evidence is accumulating that a better control of the quality may be obtained by limiting the minimum hydrogen content of the fuel. 5.2 Existing methods allow the hydrogen content to be calculated from other parameters or determined by combustion techniques. The method specified provides a quick, simple, and more precise alternative to these methods.