1.1 本试验方法包括测量元素银（Ag）、铝（Al）、砷（As）、硼（B）、钡（Ba）、铍（Be）、铋（Bi）、钙（Ca）、镉（Cd）、钴（Co）、铬（Cr）、铜（Cu）、铁（Fe）、钾（K）、锂（Li）、镁（Mg）、锰（Mn）、钼（Mo）、钠（Na）、镍（Ni）、磷（P）、铅（Pb）、硫（S）的质量分数，石墨中的锑（Sb）、硅（Si）、锡（Sn）、锶（Sr）、钛（Ti）、钒（V）、钨（W）、钇（Y）、锌（Zn）和锆（Zr）。 1.2 如果执行了适当的验证程序，本试验方法也适用于其他碳材料，如煤、焦炭、炭黑、石墨- 毡、石墨箔、石墨泡沫和纤维增强碳复合材料。 1.3 本试验方法适用于约0.0001的元素含量 mg/kg至1000 毫克/千克（0.1 ppmw至1000 ppmw），取决于元素、波长、测量参数和样品质量。 1.4 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 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 石墨中各种杂质的存在和含量是确定石墨是否适合各种应用的主要考虑因素。该试验方法提供了一种测定石墨样品中微量杂质含量的替代方法，与传统湿法相比具有相当大的优势- 化学分析方法。 5.2 该测试方法提供了一个标准程序来测量石墨中的杂质，并确保所需的石墨规格。

1.1 This test method covers the measurement of mass fractions of the elements silver (Ag), aluminum (Al), arsenic (As), boron (B), barium (Ba), berylium (Be), bismuth (Bi), calcium (Ca), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), potassium (K), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo), sodium (Na), nickel (Ni), phosphorus (P), lead (Pb), sulfur (S), antimony (Sb), silicon (Si), tin (Sn), strontium (Sr), titanium (Ti), vanadium (V), tungsten (W), yitrium (Y), zinc (Zn), and zirconium (Zr) in graphite. 1.2 Provided that an appropriate validation procedure is carried out, this test method is also applicable to other carbon materials such as coal, coke, carbon black, graphite-felt, graphite-foil, graphite-foam, and fiber reinforced carbon-carbon composites. 1.3 This test method is applicable to element contents from approximately 0.0001 mg/kg to 1000 mg/kg (0.1 ppmw to 1000 ppmw), depending on element, wavelength, measurement parameters, and sample mass. 1.4 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. 1.5 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. 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 The presence and content of various impurities in graphite are major considerations in determining the suitability of graphite for various applications. This test method provides an alternative means of determining the content of trace impurities in a graphite sample which has considerable advantages compared to classical wet-chemical analysis methods. 5.2 The test method provides a standard procedure to measure impurities in graphite and to assure required graphite specifications.