1.1 本试验方法涵盖了天然气管道中硫化氢的快速简单现场测定程序。可用的检测管的总测量范围为0.5 ppm（按体积计），最高可达40 ppm % 按体积计算，尽管大多数应用将处于该范围的低端（即低于120 ppm）。 1.2 通常，二氧化硫和硫醇可能会造成积极干扰。在某些情况下，二氧化氮会造成负面干扰。大多数检测管将有一个“预清洁”层，设计用于消除某些干扰，达到某个最大干扰水平。有关具体干扰信息，请参阅制造商的说明。 1.3 单位- 以国际单位制表示的数值应视为标准。 1.4 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。 1.5 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 天然气中硫化氢的测量很重要，因为天然气质量规范、氢的腐蚀性 2. S对管道材料的影响，以及H的影响 2. 关于利用设备。 5.2 该试验方法提供了廉价的硫化氢现场筛选。该系统的设计使非技术人员只需经过最少的适当培训即可使用。

1.1 This test method covers a procedure for a rapid and simple field determination of hydrogen sulfide in natural gas pipelines. Available detector tubes provide a total measuring range of 0.5 ppm by volume up to 40 % by volume, although the majority of applications will be on the lower end of this range (that is, under 120 ppm). 1.2 Typically, sulfur dioxide and mercaptans may cause positive interferences. In some cases, nitrogen dioxide can cause a negative interference. Most detector tubes will have a “precleanse” layer designed to remove certain interferences up to some maximum interferent level. Consult manufacturers' instructions for specific interference information. 1.3 Units— The values stated in SI units are to be regarded as the standard. 1.4 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. 1.5 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 measurement of hydrogen sulfide in natural gas is important because of gas quality specifications, the corrosive nature of H 2 S on pipeline materials, and the effects of H 2 S on utilization equipment. 5.2 This test method provides inexpensive field screening of hydrogen sulfide. The system design is such that it may be used by nontechnical personnel with a minimum of proper training.