1.1 本规程涵盖使用检测管检测和测量有毒气体或蒸汽的浓度 ( 1. , 2. ) . 2. 本规程可检测到的一些气体和蒸汽的清单及其测量范围见 附件A1 。此列表仅供参考，不应被视为绝对或完整。 1.2 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。 1.3 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。 1.4 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 联邦职业安全与健康管理局，29 美国联邦法规1910规定，工作场所大气中不得存在浓度高于特定值的某些气体和蒸汽。 5.2 本规程将提供一种方法，用于确定29中给出的某些气体和蒸汽的空气传播浓度 参考文献1910。 5.3 本规范适用的化学品部分清单见 附件A1 . 5.4 本规程还规定了用于过程控制或其他目的的气体环境取样 ( 2. , 24- 23 ). 5.5 探测管法的优点: 5.5.1 由于检测管法不需要化学分析仪、外部试剂等，因此不需要预先准备；探测管随时可以使用。 5.5.2 检测管法非常适合在工作现场使用，因为它体积小、重量轻，并且只需要很小的样品体积就可以确定样品中气体或蒸汽的浓度。 5.5.3 操作程序很简单。 5.5.4 测量结果只需几分钟即可得到，因此可以在需要时迅速采取行动。 5.5.5 在不需要电源的情况下，即使存在易燃气体，也可以使用探测管。 5.5.6 不同类型的检测管可用于不同的气体和测量范围，从0.01ppm到超过10 %, 根据分析物和试管的设计，使系统在不同的采样情况下具有灵活性。

1.1 This practice covers the detection and measurement of concentrations of toxic gases or vapors using detector tubes ( 1 , 2 ) . 2 A list of some of the gases and vapors that can be detected by this practice and their measurement ranges are provided in Annex A1 . This list is given as a guide and should be considered neither absolute nor complete. 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 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. 1.4 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 Federal Occupational Safety and Health Administration, in 29 CFR 1910, designates that certain gases and vapors must not be present in workplace atmospheres at concentrations above specific values. 5.2 This practice will provide a means for the determination of airborne concentrations of certain gases and vapors given in 29 CFR 1910. 5.3 A partial list of chemicals for which this practice is applicable is presented in Annex A1 . 5.4 This practice also provides for the sampling of gaseous atmospheres to be used for process control or other purposes ( 2 , 24- 23 ). 5.5 Advantages of the Detector Tube Method: 5.5.1 As the detector tube method requires no chemical analyzers, external reagents, etc., advance preparations are not needed; detector tubes are always ready for use. 5.5.2 The detector tube method is well-suited for use at the work site because it is small, lightweight, and needs only a small sample volume to determine the concentration of gas or vapor in a sample. 5.5.3 The operating procedures are simple. 5.5.4 The results of measurements are available in just minutes, so fast action can be taken when needed. 5.5.5 Where no electrical power source is required, detector tubes can be used even when flammable gases are present. 5.5.6 Different types of detector tubes are available for different gases and measuring ranges, from 0.01 ppm to more than 10 %, depending on analyte and tube design, making the system flexible tor different sampling situations.