1.1 本试验方法包括使用火焰光度检测器（FPD）或脉冲火焰光度检测器（PFPD）通过气相色谱法（GC）测定气体燃料中的单个挥发性含硫化合物。含硫化合物的检测范围为20至20 000皮克（pg）硫。这相当于0.02至20 mg/m 3. 或0.014至14 ppmv的硫，基于1的分析 mL样品。 1.2 本试验方法描述了使用毛细管柱色谱法和FPD或PFPD的GC方法。 1.3 本试验方法无意识别所有单个硫物种。样品的总硫含量可根据所测定的单个化合物的总量进行估算。未知化合物计算为单硫化合物。 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 许多天然气和石油气来源含有不同数量和类型的含硫化合物，这些化合物有气味，对设备有腐蚀性，可以抑制或破坏气体处理中使用的催化剂。其准确测量对于气体处理、操作和利用至关重要。 5.2 出于安全目的，向天然气和液化石油气中添加少量（通常为1至4 ppmv）硫加臭剂化合物。一些有气味的化合物可能是反应性的，并且可能被氧化，形成具有较低气味阈值的更稳定的化合物。对这些气体燃料进行硫加臭剂分析，以帮助确保适当的加臭剂水平，确保安全。 5.3 本试验方法提供了一种通过计算确定气体燃料中单个硫物种和总硫含量的技术。气相色谱法通常广泛用于测定气体燃料中的其他成分，包括固定气体和有机成分（见试验方法 D1945 ). 本试验方法规定使用特定GC技术和一种更常见的检测器进行测量。

1.1 This test method covers the determination of individual volatile sulfur-containing compounds in gaseous fuels by gas chromatography (GC) with a flame photometric detector (FPD) or a pulsed flame photometric detector (PFPD). The detection range for sulfur compounds is from 20 to 20 000 picograms (pg) of sulfur. This is equivalent to 0.02 to 20 mg/m 3 or 0.014 to 14 ppmv of sulfur based upon the analysis of a 1 mL sample. 1.2 This test method describes a GC method using capillary column chromatography with either an FPD or PFPD. 1.3 This test method does not intend to identify all individual sulfur species. Total sulfur content of samples can be estimated from the total of the individual compounds determined. Unknown compounds are calculated as monosulfur-containing compounds. 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 Many sources of natural gas and petroleum gases contain varying amounts and types of sulfur compounds, which are odorous, corrosive to equipment, and can inhibit or destroy catalysts used in gas processing. Their accurate measurement is essential to gas processing, operation, and utilization. 5.2 Small amounts, typically, 1 to 4 ppmv of sulfur odorant compounds, are added to natural gas and liquefied petroleum (LP) gases for safety purposes. Some odorant compounds can be reactive and may be oxidized, forming more stable compounds having lower odor thresholds. These gaseous fuels are analyzed for sulfur odorants to help ensure appropriate odorant levels for safety. 5.3 This test method offers a technique to determine individual sulfur species in gaseous fuel and the total sulfur content by calculation. Gas chromatography is used commonly and extensively to determine other components in gaseous fuels including fixed gas and organic components (see Test Method D1945 ). This test method dictates the use of a specific GC technique with one of the more common detectors for measurement.