1.1 本规范涵盖了使用擦拭取样方法收集表面上沉降的灰尘。以允许随后使用实验室分析技术(例如原子光谱法)提取和测定收集的粉尘中的目标金属的方式收集这些样品。 1.2 本规范不涉及用于清除、危害评估、风险评估和其他目的的取样设计标准（即取样计划，包括样品的数量和位置）。为了提供有效的结论，应按照抽样计划的指示获得足够数量的样本，例如，根据指南 D7659 . 1.3 本惯例包含的注释是解释性的，不是本惯例强制性要求的一部分。1.4 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。 1.5 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。 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====== 5.1 本规范旨在收集沉降粉尘样品，以便随后测量目标金属。该实践旨在用于收集与清理、危害评估、风险评估和其他目的相关的沉降粉尘样本。 5.2 建议从坚硬、相对光滑的无孔表面收集沉降粉尘样品。这种做法对于从具有明显纹理的表面（例如粗糙的混凝土、砖结构、纹理天花板）和柔软的纤维表面（例如室内装潢和地毯）收集沉降的灰尘样品不太有效。微真空取样实践 D7144 可能更适合这些表面。已发现从光滑、坚硬表面收集铅等金属的效率超过75%（规范 E1792 ).

1.1 This practice covers the collection of settled dust on surfaces using the wipe sampling method. These samples are collected in a manner that will permit subsequent extraction and determination of target metals in the collected dusts using laboratory analysis techniques such as atomic spectrometry. 1.2 This practice does not address the sampling design criteria (that is, sampling plan which includes the number and location of samples) that are used for clearance, hazard evaluation, risk assessment, and other purposes. To provide for valid conclusions, sufficient numbers of samples should be obtained as directed by a sampling plan, for example, in accordance with Guide D7659 . 1.3 This practice contains notes that are explanatory and are not part of the mandatory requirements of this practice. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 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 ====== 5.1 This practice is intended for the collection of settled dust samples for the subsequent measurement of target metals. The practice is meant for use in the collection of settled dust samples that are of interest in clearance, hazard evaluation, risk assessment, and other purposes. 5.2 This practice is recommended for the collection of settled dust samples from hard, relatively smooth nonporous surfaces. This practice is less effective for collecting settled dust samples from surfaces with substantial texture such as rough concrete, brickwork, textured ceilings, and soft fibrous surfaces such as upholstery and carpeting. Micro-vacuum sampling using Practice D7144 may be more suitable for these surfaces. Collection efficiency for metals such as lead from smooth, hard surfaces has been found to exceed 75 % (Specification E1792 ).