1.1本规程涵盖了一种大气采样方法，通过使用木炭管和工人佩戴的小型便携式采样泵在活性炭上吸附来确定某些有机蒸汽的存在。附录A1中提供了可通过本规程取样的一些有机化学蒸汽的列表。此列表是作为信息指南提供的，不应被视为绝对或完整。 1.2本规程不包括任何需要对活性炭或其他吸附介质进行特殊浸渍的取样方法。 1.3以国际单位制表示的数值应视为标准。 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。 9.4中给出了具体的安全预防措施。 ====意义和用途====== 美国职业安全与健康管理局（OSHA）在29 CFR 1910.1000中的发布规定，某些有机化合物不得以高于特定值的浓度存在于工作场所大气中。 当与规程D 3687一起使用时，本规程 ，将为确定CDC-99-74-45、HSM-99-71-31、NIOSH分析方法手册、29 CFR 1910.1000、OSHA化学品采样信息、OSHA采样和分析方法、危险物质测定的HSE方法中引用的许多有机化学品的气载时间加权平均浓度提供所需的准确性和精密度，和BGIA GETIS分析方法。 附录A1中给出了该方法适用的化学品的部分清单及其OSHA允许暴露极限。

1.1 This practice covers a method for the sampling of atmospheres to determine the presence of certain organic vapors by means of adsorption on activated charcoal using a charcoal tube and a small portable sampling pump worn by a worker. A list of some of the organic chemical vapors that can be sampled by this practice is provided in Annex A1. This list is presented as an information guide and should not be considered as absolute or complete. 1.2 This practice does not cover any method of sampling that requires special impregnation of activated charcoal or other adsorption media. 1.3 The values stated in SI units are to be regarded as the standard. 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. A specific safety precaution is given in 9.4. ====== Significance And Use ====== Promulgations by the U.S. Occupational Safety and Health Administration (OSHA) in 29 CFR 1910.1000 designate that certain organic compounds must not be present in workplace atmospheres at concentrations above specific values. This practice, when used in conjunction with Practice D 3687 , will provide the needed accuracy and precision for the determination of airborne time-weighted average concentrations of many of the organic chemicals cited in CDC-99-74-45, HSM-99-71-31, NIOSH Manual of Analytical Methods, 29 CFR 1910.1000, OSHA Chemical Sampling Information, OSHA Sampling and Analytical Methods, HSE Methods for the Determination of Hazardous Substances, and BGIA GETIS Analytical Methods. A partial list of chemicals for which this method is applicable is given in Annex A1, along with their OSHA permissible exposure limits.