1.1 本试验方法涵盖了液氯的取样和分析，以测定液氯中常见水平的氧（200至400μg/g）、氮（400至800μg/g）和二氧化碳（800至1000 ppm）含量。液氯中的氢和一氧化碳浓度通常等于或低于本试验方法的检测限。 注1: 使用1 cm 3. 气体样品和氩气载气为100至200μg/g。 2. 其他成分的检测限明显较低。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 有关毒性、急救程序和安全预防措施的详细信息，请查看当前的安全数据表（SDS）。 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和健康实践，并确定监管限制的适用性。 具体危害说明见第节 7. . 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====== 4.1 在采样过程中，很难排除环境空气对样品的污染。 取样方法不当导致的大气污染水平通常等于或大于氯中存在的气体杂质水平。这导致检测到的杂质水平显著升高。随着规范越来越严格，正确测量液氯中的气体杂质水平变得越来越重要。 4.2 液化气体中气体杂质的取样还遇到了其他问题。气体杂质在样品弹中的液相和汽相之间达到平衡。 在含有液体和蒸汽的任何特定样品中测量的气体量将是样品弹中蒸汽空间量的函数。该测试方法避免了样品弹中存在液体。

1.1 This test method covers sampling and analysis of liquid chlorine for the determination of oxygen (200 to 400 μg/g), nitrogen (400 to 800 μg/g), and carbon dioxide (800 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 to 200 μg/g. 2 The detection limit for the other components is significantly lower. 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 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions. 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 7 . 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 ====== 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.