1.1 本试验方法涵盖了以航空涡轮、汽油和柴油燃料的氢过氧化物数表示的氢过氧化物含量的测定。 1.2 精度声明中包含的氢过氧化物值范围为0 mg/kg至50 mg/kg活性氧作为氢过氧化物。 1.3 建立该测试方法精度的实验室间研究包括火花点火式发动机燃料（常规、优质和加州清洁燃烧汽油）、航空汽油、喷气燃料、超低硫柴油和生物柴油。然而，由于实验室内部和实验室之间的结果存在很大差异，生物柴油未被纳入精度计算。 1.4 本试验方法检测氢过氧化物，如叔丁基氢过氧化物和氢过氧化枯烯。它不能检测到空间位阻的氢过氧化物，如二枯基和二叔丁基氢过氧化物。 1.5 本试验方法未检测到商业添加到柴油燃料中的二烷基氢过氧化物。 1.6 以国际单位制表示的值应被视为标准值。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.7 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。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。 有关具体的警告声明，请参阅 7.3 , 7.6 , 9.2 ，以及 附件A1 . 1.8 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 氢过氧化物值的大小表示存在的氧化成分的量。燃料的劣化导致氢过氧化物和其他含氧化合物的形成。氢过氧化物数测量那些会氧化碘化钾的化合物。 5.2 由于氢过氧化物对燃料系统中某些弹性体的不利影响，因此确定航空涡轮燃料、汽油和柴油的氢过氧化物值具有重要意义。 5.3 汽油氢过氧化物值的测定具有重要意义，因为氢过氧化物已被证明会降低研究和汽车辛烷值。此外，氢过氧化物对某些燃油系统部件有不利影响。 5.4 柴油燃料氢过氧化物值的测定具有重要意义，因为氢过氧化物已被证明可以提高十六烷值。 此外，氢过氧化物对某些燃油系统部件有不利影响。

1.1 This test method covers the determination of the hydroperoxide content expressed as hydroperoxide number of aviation turbine, gasoline and diesel fuels. 1.2 The range of hydroperoxide number included in the precision statement is 0 mg/kg to 50 mg/kg active oxygen as hydroperoxide. 1.3 The interlaboratory study to establish the precision of this test method consisted of spark-ignition engine fuels (regular, premium and California Cleaner-Burning gasoline), aviation gasoline, jet fuel, ultra low sulfur diesel, and biodiesel. However, biodiesel was not included in the precision calculation because of the large differences in results within labs and between labs. 1.4 This test method detects hydroperoxides such as t-butyl hydroperoxide and cumene hydroperoxide. It does not detect sterically-hindered hydroperoxides such as dicumyl and di-t-butyl hydroperoxides. 1.5 Di-alkyl hydroperoxides added commercially to diesel fuels are not detected by this test method. 1.6 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. 1.7 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 specific warning statements, see 7.3 , 7.6 , 9.2 , and Annex A1 . 1.8 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 magnitude of the hydroperoxide number is an indication of the quantity of oxidizing constituents present. Deterioration of the fuels results in the formation of hydroperoxides and other oxygen-carrying compounds. The hydroperoxide number measures those compounds that will oxidize potassium iodide. 5.2 The determination of the hydroperoxide number of aviation turbine fuels, gasoline and diesel is significant because of the adverse effect of hydroperoxide upon certain elastomers in the fuel systems. 5.3 The determination of hydroperoxide number of gasoline is significant because hydroperoxides have been demonstrated to decrease both Research and Motor Octane Numbers. In addition, hydroperoxides have adverse effects on certain fuel system components. 5.4 The determination of hydroperoxide number of diesel fuel is significant because hydroperoxides have been demonstrated to increase the Cetane Number. In addition, hydroperoxides have adverse effects on certain fuel system components.