1.1 本规程包括使用擦拭取样法收集表面上沉淀的含铅灰尘。这些样本的采集方式将允许后续提取（见实践 E1644 和 E1979 )以及使用原子光谱法等实验室分析技术测定铅（见试验方法 E3193/E3193M 和 E3203 ). 用于测定铅和其他金属的沉降灰尘样品的收集，使用实施规程 D6966 . 1.2 本规程不涉及用于清理的采样设计标准（即包括样本数量和位置的采样计划）（见规程 e22.71/e22.71米 和 E3074/E3074M )，铅危害评估或风险评估（参见指南 E2115 )，以及其他目的。 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。 1.3 本规程包含解释性说明，不属于本规程强制性要求的一部分。 1.4 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且不得将两个系统的值组合使用。 1.5 本标准并不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。 1.6 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 本规程旨在收集建筑物和相关结构内及其周围的沉降灰尘样本，以便随后以符合HUD指南和40中所述的方式测定铅含量 成本加运费 745.63. 该做法适用于收集对清理、危险评估、风险评估和其他目的感兴趣的沉降灰尘样本。 5.2 施加到采样表面的不同压力的使用以及不同擦拭模式的使用有助于收集的可变性。因此，作为采集变量的结果，在从相同表面执行采集的操作员之间，采样结果可能会有所不同。当仅限于单个操作员时，对给定采样点的任何一组采样位置进行采集是最好的。 5.3 建议采用此方法从坚硬、相对光滑、无孔的表面收集沉降的灰尘样品。这种做法对于从粗糙的混凝土、砖砌、有纹理的天花板以及软纤维表面（如室内装饰和地毯）收集沉降灰尘样本的效果较差。

1.1 This practice covers the collection of settled lead-containing dust on surfaces using the wipe sampling method. These samples are collected in a manner that will permit subsequent extraction (see Practices E1644 and E1979 ) and determination of lead using laboratory analysis techniques such as atomic spectrometry (see Test Methods E3193/E3193M and E3203 ). For collection of settled dust samples for determination of lead and other metals, use Practice D6966 . 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 (see Practices E2271/E2271M and E3074/E3074M ), lead hazard evaluation, or risk assessment (see Guide E2115 ), and other purposes. To provide for valid conclusions, sufficient numbers of samples should be obtained as directed by a sampling plan. 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 either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 in and around buildings and related structures for the subsequent determination of lead content in a manner consistent with that described in the HUD Guidelines and 40 CFR 745.63. The practice is meant for use in the collection of settled dust samples that are of interest in clearance, hazard assessment, risk assessment, and other purposes. 5.2 Use of different pressures applied to the sampled surface along with the use of different wiping patterns contribute to collection variability. Thus, the sampling result can vary between operators performing collection from identical surfaces as a result of collection variables. Collection for any group of sampling locations at a given sampling site is best when limited to a single operator. 5.3 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.