1.1 本试验方法包括测定石墨中硫的浓度范围为1 μg/g至1000 微克/克（ppm）。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 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。 1.4 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 由于金属部件的潜在腐蚀，即使在非常低的浓度下，硫在核反应堆中也是令人担忧的。该试验方法对使用非常小的样品分析石墨中非常低的硫含量具有灵敏度。 5.2 该试验方法可用于表征石墨的特性，以达到设计目的。

1.1 This test method covers the determination of sulfur in graphite in the concentration range from 1 μg/g to 1000 μg/g (ppm). 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 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. 1.4 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 Sulfur, even in very low concentrations, is of concern in a nuclear reactor because of potential corrosion of metallic components. This test method has the sensitivity to analyze very low sulfur contents in graphite using very small samples. 5.2 This test method can be used to characterize graphite for design purposes.