1.1 本试验方法涵盖了航空涡轮燃料中脂肪酸甲酯（FAME）含量在10 mg/kg至400 通过测量FAME之前、期间和之后的红外（IR）透射，使用合适的催化剂促进的选择性化学反应将FAME转化为在与FAME不同的光谱区域中吸收的分子。 注1: 该测试方法检测所有FAME组分，其红外吸收峰值约为1749 cm -1 和C 8. 至C 22 碳链长度。该测试方法的准确性基于C的分子量 16 至C 18 FAME物种。其他具有不同分子量的FAME物种的存在可能会影响准确性。 注2: 抗静电剂、抗氧化剂和缓蚀剂等添加剂用FAME通过中红外吸收测定。 然而，这些添加剂对用于定量FAME的差分吸收光谱没有贡献，因为它们不参与选择性反应。 1.2 该试验方法仅具有临时重复性精度，见第节 15 了解更多信息。 1.3 单位- 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的警告声明 8. . 1.5 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 当前和日益增长的国际政府要求添加FAME（生物柴油，如《规范》等标准中的规定 D6751型 和 英语14214 )柴油的副作用是导致多燃料运输设施（如油轮和管道）中的喷气涡轮燃料可能受到FAME污染。FAME已作为已识别的事故材料添加到规范表3中 1655年 其中规定了允许的污染水平。 5.2 本测试方法由非专业人员开发用于供应链，以检测范围为10 mg/kg至400 毫克/千克。 注3: 该试验方法可用于从航空涡轮燃料中的脂质共加氢处理烃合成煤油中筛选未转化的酯。 此应用程序在 1.2倍 .

1.1 This test method covers the quantification of the fatty acid methyl esters (FAME) content in aviation turbine fuel in the range of 10 mg/kg to 400 mg/kg by measuring infrared (IR) transmission before, during, and after FAME is converted to molecules that absorb in a different spectral region than FAME using a selective chemical reaction facilitated by a suitable catalyst. Note 1: This test method detects all FAME components with peak IR absorbance at approximately 1749 cm -1 and C 8 to C 22 carbon chain length. The accuracy of this test method is based on the molecular weight of C 16 to C 18 FAME species. The presence of other FAME species with different molecular weights could affect the accuracy. Note 2: Additives such as antistatic agents, antioxidants, and corrosion inhibitors are measured with the FAME by mid IR absorption. However, these additives do not contribute to the differential absorption spectrum used to quantify FAME, as they do not take part in the selective reaction. 1.2 This test method has interim repeatability precision only, see Section 15 for more information. 1.3 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. Specific warning statements are given in Section 8 . 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 present and growing international governmental requirements to add FAME (biodiesel, as specified in standards such as Specification D6751 and EN 14214 ) to diesel fuel has had the side effect of leading to potential FAME contamination of jet turbine fuel in multifuel transport facilities such as cargo tankers and pipelines. FAME has been added as an identified incident material to Table 3 of Specification D1655 in which a permitted level of contamination is specified. 5.2 This test method has been developed for use in the supply chain by nonspecialized personnel to detect all kinds of FAME covering the range of 10 mg/kg to 400 mg/kg. Note 3: This test method can be used to screen for unconverted esters from lipid co-hydroprocessed hydrocarbon synthetic kerosene in aviation turbine fuel. This application is detailed in X1.2 .