1.1 本试验方法采用FTIR气体分析系统，相对于SAE TIR J2719（2008年4月）或其他管理机构氢燃料质量标准中描述的氢燃料质量限值，测定气态氢燃料中的微量杂质。该FTIR方法用于直接在加油站或在被送往其他地方进行分析的提取样品上量化氢燃料中多种目标污染物的气相浓度。可以同时测量多种污染物，只要它们处于气相并在红外波长区域内吸收即可。本标准的检测限值以及特定目标污染物是基于SAE TIR J2719中规定的那些进行选择的。 1.2 该测试方法允许测试仪确定气相中氢燃料杂质的哪些特定污染物是活性红外吸收剂，这些污染物满足或超过SAE TIR J2719为其特定FTIR仪器设定的检测限值。 具体目标污染物包括但不限于氨、一氧化碳、二氧化碳、甲醛、甲酸、甲烷、乙烷、乙烯、丙烷和水。该试验方法可以扩展到其他杂质，前提是它们处于气相或可以蒸发，并且是活性红外吸收剂。 1.3 本试验方法旨在分析用于燃料电池原料气或内燃机燃料的氢燃料。只要还确定了目标杂质和所需的限度，该方法也可以扩展到用于包括工业应用在内的其他应用的高纯度氢气的分析。 1.4 该试验方法可用于分析在使用点直接从加油站喷嘴或其他原料气源取样的氢燃料。取样装置包括压力调节器和计量阀，以提供合适的气流用于FTIR光谱仪的直接分析。 1.5 该测试方法也可用于分析储存容器中从使用点或其他来源捕获的样本。可以在样品源附近的移动实验室或标准分析实验室中对储存的样品进行分析。 1.6 应编制一份测试计划，包括（1）待测量的特定杂质种类，（2）每个杂质种类的浓度限值，以及（3）测试前在仪器上测量的每个杂质种类最小可检测浓度的确定。 1.7 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.7.1 例外 所有数值均基于这些特定数值在行业中使用的通用术语，当与国际单位制不一致时，适当的国际单位制将包含在通用数值使用后的括号中( 4.4 , 7.8 , 7.9 , 10.5 和 11.6 ). 1.8 本标准并不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。 1.9 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 燃料电池用户认为原料气中的微量杂质会损害质子交换膜燃料电池（PEMFC）的性能和寿命。PEMFC可能因燃料电池电极材料中毒而受到某些污染物的损害； 因此，检测低浓度的这些杂质对于燃料电池制造商和原料气供应商至关重要，以便支持燃料电池在运输和能源生产中广泛应用所需的设施和基础设施。通过现场便携式设备，该测试方法可用于快速分析车辆加油站或用于供应固定发电厂的储罐中的氢燃料杂质。天然气供应商、客户和监管机构也可以使用该测试方法来认证氢燃料的质量。 5.2 用户包括氢气生产商、气体燃料监管转移利益相关者、加油站、燃料电池制造商、汽车制造商、监管机构和固定燃料电池发电厂运营商。

1.1 This test method employs an FTIR gas analysis system for the determination of trace impurities in gaseous hydrogen fuels relative to the hydrogen fuel quality limits described in SAE TIR J2719 (April 2008) or in hydrogen fuel quality standards from other governing bodies. This FTIR method is used to quantify gas phase concentrations of multiple target contaminants in hydrogen fuel either directly at the fueling station or on an extracted sample that is sent to be analyzed elsewhere. Multiple contaminants can be measured simultaneously as long as they are in the gaseous phase and absorb in the infrared wavelength region. The detection limits as well as specific target contaminants for this standard were selected based upon those set forth in SAE TIR J2719. 1.2 This test method allows the tester to determine which specific contaminants for hydrogen fuel impurities that are in the gaseous phase and are active infrared absorbers which meet or exceed the detection limits set by SAE TIR J2719 for their particular FTIR instrument. Specific target contaminants include, but are not limited to, ammonia, carbon monoxide, carbon dioxide, formaldehyde, formic acid, methane, ethane, ethylene, propane, and water. This test method may be extended to other impurities provided that they are in the gaseous phase or can be vaporized and are active infrared absorbers. 1.3 This test method is intended for analysis of hydrogen fuels used for fuel cell feed gases or for internal combustion engine fuels. This method may also be extended to the analysis of high purity hydrogen gas used for other applications including industrial applications, provided that target impurities and required limits are also identified. 1.4 This test method can be used to analyze hydrogen fuel sampled directly at the point-of-use from fueling station nozzles or other feed gas sources. The sampling apparatus includes a pressure regulator and metering valve to provide an appropriate gas stream for direct analysis by the FTIR spectrometer. 1.5 This test method can also be used to analyze samples captured in storage vessels from point-of-use or other sources. Analysis of the stored samples can be performed either in a mobile laboratory near the sample source or in a standard analytical laboratory. 1.6 A test plan should be prepared that includes (1) the specific impurity species to be measured, (2) the concentration limits for each impurity species, and (3) the determination of the minimum detectable concentration for each impurity species as measured on the apparatus before testing. 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7.1 Exception— All values are based upon common terms used in the industry of those particular values and when not consistent with SI units, the appropriate SI unit will be included in parentheses after the common value usage ( 4.4 , 7.8 , 7.9 , 10.5 , and 11.6 ). 1.8 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. 1.9 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 Fuel cell users have implicated trace impurities in feed gases as compromising the performance and lifespan of proton exchange membrane fuel cells (PEMFCs). PEMFCs may be damaged by the presence of some contaminants through poisoning of fuel cell electrode materials; therefore detection of these impurities at low concentrations is critical to fuel cell manufacturers and feed gas suppliers in order to support the facilities and infrastructure required for widespread applicability of fuel cells in transportation and energy production. With field-portable equipment, this test method can be used to quickly analyze hydrogen fuel for impurities at vehicle fueling stations or storage tanks used to supply stationary power plants. This test method can also be used by gas suppliers, customers, and regulatory agencies to certify hydrogen fuel quality. 5.2 Users include hydrogen producers, gaseous fuel custody transfer stakeholders, fueling stations, fuel cell manufacturers, automotive manufacturers, regulators, and stationary fuel cell power plant operators.