1.1 本试验方法描述了一种使用高温管式炉和红外检测来测定煤和焦炭燃烧残留物中硫的程序，包括实验室灰烬和煤和焦炭的燃烧残留物。 1.2 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、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 来自煤或焦炭的灰分的硫质量分数可以计算为三氧化硫质量分数。该信息可与同一灰分中主要、次要和/或痕量元素的测定结果结合使用，以计算无三氧化硫的结果- 基础或计算总回收分析物。

1.1 This test method describes a procedure using a high-temperature tube furnace and infrared detection for the determination of sulfur in coal and coke combustion residues, including lab ashes and residues from coal and coke combustion. 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 sulfur mass fraction of the ash derived from coal or coke can be calculated to sulfur trioxide mass fraction. This information can be used in combination with results from the determination of major, minor and or trace elements in the same ash to calculate results on a sulfur trioxide free-basis or to calculate total recovered analyte.