1.1 这些试验方法包括测定燃油中浓度在5 mg/kg和150 铝和10 mg/kg mg/kg和250 对于硅，mg/kg。 1.2 试验方法A- 本试验方法使用电感耦合等离子体原子发射光谱法定量测定铝和硅。 1.3 试验方法B- 本试验方法使用火焰原子吸收光谱法定量测定铝和硅。 1.4 以国际单位表示的数值视为标准值。 本标准不包括其他计量单位。 1.5 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。 第节中给出了具体的警告声明 7.6 , 10.1 和 11.5 . 1.6 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 燃油中的催化剂粉末会导致发动机异常磨损。这些试验方法提供了测定催化剂主要成分硅和铝的方法。

1.1 These test methods cover the determination of aluminum and silicon in fuel oils at concentrations between 5 mg/kg and 150 mg/kg for aluminum and 10 mg/kg and 250 mg/kg for silicon. 1.2 Test Method A— Inductively coupled plasma atomic emission spectrometry is used in this test method to quantitatively determine aluminum and silicon. 1.3 Test Method B— Flame atomic absorption spectrometry is used in this test method to quantitatively determine aluminum and silicon. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 Sections 7.6 , 10.1 , and 11.5 . 1.6 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 Catalyst fines in fuel oils can cause abnormal engine wear. These test methods provide a means of determining silicon and aluminum, the major constituents of the catalysts.