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。本规程中提供了一些可取样的有机化学蒸汽列表 附件A1 . 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值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 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、健康和环境实践，并确定监管限制的适用性。 具体的安全预防措施见 9.4 . 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====== 5.1 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。 5.2 本规程与试验方法结合使用时 D3687 ，将为确定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，包括但不限于CDC-99-74-45、HSM-99-71-31、NIOSH分析方法手册、29 CFR 1910.1000、OSHA化学采样信息、OSHA采样和分析方法，以及确定有害物质的HSE方法。 5.3 本方法适用的化学品部分清单见 附件A1 以及OSHA允许的接触限值。

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 standard. The values given in parentheses after SI units are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific safety precaution is given in 9.4 . 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 ====== 5.1 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. 5.2 This practice, when used in conjunction with Test Method D3687 , will provide the needed accuracy and precision for the determination of airborne time-weighted average concentrations of many of the organic chemicals including but not limited to 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, and HSE Methods for the Determination of Hazardous Substances. 5.3 A partial list of chemicals for which this method is applicable is given in Annex A1 , along with their OSHA permissible exposure limits.