1.1 本试验方法使用能量色散X射线荧光（EDXRF）光谱法检测和定量油漆层、类似涂层或基材和均质材料中的铅（Pb）。在本标准试验方法的实验室间研究中，对以下材料类型进行了试验:ABS塑料、聚乙烯、聚丙烯、PVC、玻璃、锌合金、木材和织物。 1.2 该技术也可以通常称为高清晰度X射线荧光（HDXRF）或多单色光束EDXRF（MMB-EDXRF）。 1.3 本试验方法适用于 1.1 对于Pb质量分数范围为14至1200 mg/kg的未涂覆样品和30至450 mg/kg的涂覆样品，如 表1 并通过使用代表性样品的实验室间研究确定 1.4 确保样品的分析区域外观均匀，且至少与X一样大- 样品激发点处的射线激发光束。 1.5 对于涂层分析，此测试方法仅限于油漆和类似涂层。本试验方法不包括金属涂层。 1.6 X射线术语-- 本标准使用IUPAC约定和Siegbahn约定在括号中命名X射线线。 1.7 本标准没有已知的ISO等效方法。 1.8 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.9 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。 1.10 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 本试验方法可用于玩具、儿童用品和其他消费品等油漆和未油漆物品中铅的定量测定。同质样品中Pb定量的典型测试时间为1-3分钟；并且用于定量涂料中Pb的典型测试时间为4-8分钟。

1.1 This test method uses energy dispersive X-ray fluorescence (EDXRF) spectrometry for detection and quantification of lead (Pb) in paint layers, similar coatings, or substrates and homogenous materials. The following material types were tested in the interlaboratory study for this standard test method: ABS plastic, polyethylene, polypropylene, PVC, glass, zinc alloy, wood, and fabric. 1.2 This technique may also be commonly referred to as High Definition X-ray Fluorescence (HDXRF) or Multiple Monochromatic Beam EDXRF (MMB-EDXRF). 1.3 This test method is applicable for the products and materials described in 1.1 for a Pb mass fraction range of 14 to 1200 mg/kg for uncoated samples and 30 to 450 mg/kg for coated samples, as specified in Table 1 and determined by an interlaboratory study using representative samples 1.4 Ensure that the analysis area of the sample is visually uniform in appearance and at least as large as the X-ray excitation beam at the point of sample excitation. 1.5 For coating analysis, this test method is limited to paint and similar coatings. Metallic coatings are not covered by this test method. 1.6 X-ray Nomenclature— This standard names X-ray lines using the IUPAC convention with the Siegbahn convention in parentheses. 1.7 There are no known ISO equivalent methods to this standard. 1.8 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.9 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. 1.10 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 test method may be used for quantitative determinations of Pb in painted and unpainted articles such as toys, children’s products, and other consumer products. Typical test time for quantification of Pb in homogenous samples is 1 to 3 min; and typical test time for quantification of Pb in paint is 4 to 8 min.