1.1 该试验方法描述了通过热重分析法测定有机材料的硫酸盐灰分含量（有时称为点燃残留物）。该试验方法将有机材料中常见的金属（如钠、钾、锂、钙、镁、锌和锡）转化为硫酸盐，从而可以估计其硫酸盐或氧化物的总含量。该测试方法的范围为0.1 % 至100%金属含量。 1.2 以国际单位制表示的数值应视为标准。本标准中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。 1.4 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 硫酸盐灰分值表示有机材料中已知的含金属添加剂或杂质的水平。当磷不存在时，钡、钙、镁、钠和钾会转化为硫酸盐。锡和锌被转化为它们的氧化物。 5.2 此测试方法可用于研发、规范验收和质量保证目的。

1.1 This test method describes the determination of sulfated ash content (sometimes called residue-on-ignition) of organic materials by thermogravimetry. This test method converts common metals found in organic materials (such as sodium, potassium, lithium, calcium, magnesium, zinc, and tin) into their sulfate salts permitting estimation of their total content as sulfates or oxides. The range of this test method is from 0.1 % to 100 % metal content. 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 The sulfated ash value indicates the level of known metal-containing additives or impurities in an organic material. When phosphorus is absent, barium, calcium, magnesium, sodium and potassium are converted to their sulfates. Tin and zinc are converted to their oxides. 5.2 This test method may be used for research and development, specification acceptance, and quality assurance purposes.