1.1 本试验方法涵盖了使用72 μg/L检测下限。该方法无法区分不同的聚合物类型。因此，任何非DRA高分子量聚合物都会导致正的测量偏差。需要进一步调查以确认检测到的聚合物是DRA。 1.2 以SI单位表示的值应视为标准值。本标准不包括其他计量单位。 1.3 警告- 汞已被许多监管机构指定为可能导致严重医疗问题的有害物质。汞或其蒸汽已被证明对健康有害，对材料具有腐蚀性。处理含汞和含汞产品时请小心。有关更多信息，请参阅适用的产品安全数据表（SDS）。当地或国家法律可能禁止销售汞或含汞产品，或两者兼而有之。用户必须确定其所在地销售的合法性。 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。 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《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 DRA经常被添加到多产品管道中，以增加吞吐量或减少燃料移动的能量需求。尽管这些添加剂不用于喷气燃料中，但如果不遵循适当的配料指南或其他人为错误的情况下，其他产品可能会产生污染。CRC第642号报告审查了DRA对喷气燃料适用性能的影响，并得出结论:在高浓度下，几种发动机型燃料喷嘴的燃料喷射角和雾化能力可能会对高空重燃性能产生不利影响。 准确量化喷气燃料中DRA含量的方法可用于确认无重大污染，以保护航空运营安全。该测试方法旨在测量航空燃料中的DRA含量低于100µg/L。

1.1 This test method covers the measurement of high molecular weight polymers, in particular pipeline drag reducer additive (DRA), in aviation turbine fuels with a 72 µg/L lower detection limit. The method cannot differentiate between different polymers types. Thus, any non-DRA high molecular weight polymer will cause a positive measurement bias. Further investigation is required to confirm the polymer detected is DRA. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 Warning— Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 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. 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 DRA is frequently added into multiproduct pipelines to increase throughput or reduce energy requirements of fuel movement. Although these additives are not used in jet fuel, contamination can occur from other products if proper batching guidelines are not followed or by other cases of human error. CRC Report No. 642 reviewed the impact of DRA on jet fuel fit-for-purpose performance and concluded that the fuel spray angle and atomization capability of several engine-type fuel nozzles can be adversely affected impacting high altitude relight performance at elevated concentrations. A method that accurately quantifies the amount of DRA in jet fuel can be useful in confirming the absence of significant contamination to protect the safety of aviation operations. This test method is designed to measure down to sub-100 µg/L levels of DRA in aviation fuel.