1.1 本试验方法用于测定97 % 质量或更高纯度（浓缩物）。这些杂质的浓度范围为0.35 mg/kg至8575mg/kg，并且包括以下组分:甲烷、乙烷、乙烯、丙烷、乙炔、异丁烷、丙二烯、正丁烷、反-2-丁烯、丁烯-1、异丁烯、顺-2-丁烯、异戊烷、甲基乙炔、正戊烷和1,3-丁二烯。 注1: 可选地，分析可包括测定戊烯/己烷和较重组分，参见 6.3 . 1.2 该测试方法不确定非碳氢化合物杂质，可能需要进行额外的测试以充分表征丙烯样品。然而，为了本试验的目的，丙烯的纯度被确定为所测定的分析物总量与100 % （通过差异）。 1.3 当本试验方法用于测定高纯度丙烯中的痕量杂质时，由于样品之间可能存在交叉污染，不建议使用本试验方法分析较低纯度的丙烯样品。 1.4 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.5 本标准可能涉及危险材料、操作和设备。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。 1.5.1 建议用户接受有关本试验方法程序和相关活动安全操作的LPG安全培训。 ASTM.org网站上提供了“液化石油气取样安全”在线学习培训课程。 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 高纯度丙烯需要用作各种制造工艺的原料，微量某些烃类杂质的存在可能会对产率或催化剂寿命产生不利影响。该测试方法适用于设定商业规范的基准、内部质量控制工具以及开发或研究工作。

1.1 This test method is used for the determination of hydrocarbon impurities in propylene (propene) material of 97 % by mass or greater purity (concentrates). These impurities are determined in the concentration range of 0.35 mg/kg to 8575 mg/kg and includes the following components: methane, ethane, ethylene, propane, acetylene, isobutane, propadiene, normal butane, trans-2-butene, butene-1, isobutylene, cis-2-butene, isopentane, methylacetylene, normal pentane, and 1,3-butadiene. Note 1: Optionally, the analysis may include the determination of pentenes/hexanes and heavier components, see 6.3 . 1.2 This test method does not determine non-hydrocarbon impurities, and additional tests may be necessary to fully characterize the propylene sample. However, for the purposes of this test, the purity of propylene is determined as the difference between the total of the determined analytes and 100 % (by difference). 1.3 When this test method is being used for the determination of trace level impurities in high-purity propylene, the use of this test method for the analysis of propylene samples at lower purities is not recommended due to the potential for cross contamination between samples. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard may involve hazardous materials, operations, and equipment. 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. 1.5.1 The user is advised to obtain LPG safety training for the safe operation of this test method procedure and related activities. The eLearning training course “Liquefied Petroleum Gases Sampling Safety” is available on the ASTM.org website. 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 High-purity propylene is required as a feedstock for various manufacturing processes, and the presence of trace amounts of certain hydrocarbon impurities may have adverse effects on yield or catalyst life. This test method is suitable for use as a benchmark in setting commercial specifications, for use as an internal quality control tool, and for use in development or research work.