1.1 本试验方法涵盖了液氯的取样和分析，以测定液氯中正常水平的氧（200 μ g/g至400 μ g/g）、氮（400 μ g/g至800 μ g/g）和二氧化碳（800 ppm至1000 ppm）含量。液氯中的氢气和一氧化碳浓度通常等于或低于该测试方法的检测限。 附注1: 使用1 cm的氢的最低检测限 3 气体样品和氩载气为100 μ g/g至200 μ g/g。 2 其他组分的检测限明显较低。未生成数据以确定气态杂质的最低检测限。 1.2 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.3 在确定使用本方法的试验结果是否符合适用的质量标准时，结果应按照四舍五入-off练习方法 E29 . 1.4 查看当前的安全数据表（SDS），了解有关毒性、急救程序和安全预防措施的详细信息。 1.5 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 具体危害陈述见第节 7 . 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》中确立的国际公认的标准化原则制定的。======意义和用途====== 4.1 在取样过程中很难排除环境空气对样品的污染。由不良采样方法引起的大气污染水平通常等于或大于氯中存在的气态杂质的水平。这导致检测到的杂质水平显著升高。随着规格变得越来越严格，正确测量液氯中的气态杂质水平变得更加重要。 4.2 在液化气体杂质的取样中会遇到额外的问题。气态杂质在样品弹中达到液相和气相之间的平衡。在含有液体和蒸气两者的任何特定样品中测量的气体量将是样品弹中蒸气空间量的函数。这种测试方法避免了样品弹中液体的存在。

1.1 This test method covers sampling and analysis of liquid chlorine for the determination of oxygen (200 μg/g to 400 μg/g), nitrogen (400 μg/g to 800 μg/g), and carbon dioxide (800 ppm to 1000 ppm) content at levels normally seen in liquid chlorine. Hydrogen and carbon monoxide concentrations in liquid chlorine are typically at or below the detection limit of this test method. Note 1: The minimum detection limit of hydrogen using a 1 cm 3 gas sample and argon carrier gas is 100 μg/g to 200 μg/g. 2 The detection limit for the other components is significantly lower. Data was not generated to determine the lowest detection limits of the gaseous impurities. 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 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29 . 1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions. 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. Specific hazards statements are given in Section 7 . 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 ====== 4.1 It is very difficult to exclude sample contamination by ambient air during the process of sampling. The levels of atmospheric contamination caused by poor sampling methods are often equal to or larger than the levels of the gaseous impurities present in the chlorine. This results in markedly elevated levels of detected impurities. As specifications become tighter, it becomes more important to measure the gaseous impurity levels in liquid chlorine correctly. 4.2 Additional problems are experienced in the sampling of liquefied gases for the gaseous impurities. The gaseous impurities reach an equilibrium between the liquid phase and vapor phase in a sample bomb. The quantity of gases measured in any particular sample containing both liquid and vapor will be a function of the amount of vapor space in the sample bomb. This test method avoids the presence of liquid in the sample bomb.