1.1 本试验方法包括通过原子吸收光谱法对未经加工和煅烧的石油焦的实验室分析样品中通常测定的微量金属（铝、钙、铁、镍、硅、钠和钒）进行分析。 1.2 本试验方法适用的元素浓度范围和本试验方法的检测限列于 表1 . 1.3 以国际单位表示的数值应视为标准值。 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。 有关警告声明，请参阅章节 9 – 11 . 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 石油焦中各种金属元素的存在和浓度是影响焦炭适用于各种用途的主要因素。本试验方法提供了一种测量焦炭样品中金属元素含量的方法。 5.2 这些元素的浓度是决定焦炭经济价值的一个因素。用于生产电极的焦炭将根据电极的用途有不同的规格要求。一般来说，燃料焦炭的金属元素浓度最高，经济价值最低。 5.3 该试验方法提供了一个标准程序，供买方和卖方在石油焦的商业转让中使用，以确定该批焦炭是否符合买方的规范。

1.1 This test method covers the analysis for the commonly determined trace metals (aluminum, calcium, iron, nickel, silicon, sodium, and vanadium) in laboratory analysis samples of raw and calcined petroleum coke by atomic absorption spectroscopy. 1.2 The elemental concentration ranges for which this test method is applicable and the limits of detection of this test method are listed in Table 1 . 1.3 The values stated in SI units are to be regarded as the 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. For warning statements, see Sections 9 – 11 . 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 presence and concentration of various metallic elements in a petroleum coke are major factors in the suitability of the coke for various uses. This test method provides a means of measuring the amounts of those metallic elements in the coke sample. 5.2 The concentration of these elements is one factor in determining the economic value of the coke. Coke used for production of electrodes will have different specification requirements dependent on what service the electrodes will be used in. Generally the fuel cokes are highest in metallic element concentration and have the least economic value. 5.3 The test method provides a standard procedure for use by the purchaser and seller in the commercial transfer of petroleum coke to determine whether the lot of coke meets the specifications of the purchasing party.