1.1本试验方法使用能量色散X射线荧光光谱法（EDXRF）检测和量化油漆层、类似涂层或基材和同质材料中的铅（Pb）。在本标准试验方法的实验室间研究中，测试了以下材料类型:ABS塑料、聚乙烯、聚丙烯、PVC、玻璃、锌合金、木材和织物。 1.2该技术通常也称为高清X射线荧光（HDXRF）或多单色束EDXRF（MMB-EDXRF）。 1.3本试验方法适用于1.1中所述的产品和材料，未涂覆样品的铅质量分数范围为14至1200 mg/kg，涂覆样品的铅质量分数范围为30至450 mg/kg，如表1所示，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，至少与样品激发点的X射线激发束一样大。 1.5对于涂层分析，本试验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射线命名法 — 本标准使用IUPAC约定和括号中的Siegbahn约定命名X射线。 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值。本标准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。 ====意义和用途====== 本试验方法可用于定量测定玩具、儿童等涂漆和未涂漆物品中的铅 ’ s产品和其他消费品。同质样品中铅定量的典型测试时间为1至3分钟；油漆中铅定量的典型测试时间为4到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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 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.