1.1 本试验方法包括测定锅炉炉膛和类似反应器燃烧固体副产品中残留的总碳、可燃碳和碳酸盐碳，包括灰分、飞灰、煤焦、炉渣和类似材料。 1.2 本试验方法旨在用于工业测定锅炉炉和类似燃烧反应器的性能，并有助于测定燃烧固体残渣的质量。 1.3 该试验方法包括使用几种方法中的任何一种来测定总碳含量，结合几种方法中的任何一种来测定碳酸盐碳，并通过差值计算样品中剩余的可燃碳。 1.4 或者，本试验方法适用于测定用强酸酸化以析出碳酸盐碳后材料中残留的总碳。 在这种情况下，可燃碳是酸化后样品中测得的总碳。 1.5 以国际单位制表示的数值应视为标准值。非国际单位制（如提供）仅供参考，包含在括号内。 1.6 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制定适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 1.7 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 固体残渣的可燃碳含量用于计算锅炉炉膛和类似燃烧器中的燃料燃烧效率。 5.2 可燃碳值也用于确定其他消耗含碳燃料的反应器（例如流化床炉和液化、气化和热解反应器）中未完全燃烧/反应的煤和焦炭的残余燃料值。 5.3 粉煤灰的可燃碳含量是将粉煤灰用作水泥添加剂的一个重要参数。

1.1 This test method covers the determination of total, combustible, and carbonate carbon remaining in the solid byproducts of combustion from boiler furnaces and similar reactors, including ash, flyash, char, slag, and similar materials. 1.2 This test method is intended for the use of industry to determine the performance of boiler furnaces and similar combustion reactors and aid in determining the quality of the solid residue from combustion. 1.3 This test method comprises the use of any of several methods to determine total carbon content combined with any of several methods to determine carbonate carbon, and the calculation, by difference, of the combustible carbon remaining in a sample. 1.4 Alternatively, this test method applies to the determination of total carbon remaining in a material after acidification with strong acid to evolve carbonate carbon. In this case, the combustible carbon is the total carbon measured in the sample after acidification. 1.5 The values stated in SI units are to be regarded as standard. Non-SI units, if provided, are for information only and are contained within parentheses. 1.6 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 to determine the applicability of regulatory limitations prior to use. 1.7 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 combustible carbon content of solid residues is used to calculate efficiency of fuel combustion in boiler furnaces and similar combustors. 5.2 Combustible carbon values are also used to determine the residual fuel value of incompletely combusted/reacted coal and coke in other reactors that consume carbonaceous fuels (examples include fluidized bed furnaces and liquefaction, gasification and pyrolysis reactors). 5.3 The combustible carbon content of flyash is an important parameter in the use of flyash as a cement additive.