1.1 本试验方法描述了一种能量色散X射线荧光（EDXRF）程序，用于测定玩具和消费品（如塑料、木材、钢、铝、锌合金或织物）常见基材上油漆和类似涂层中每单位面积质量的铅的面积质量。 1.2 本试验方法适用于均质单层涂料或类似涂料。该方法不适用于金属涂层。 1.3 本试验方法适用于单位面积铅质量范围为0.36μg/cm 2. 约10μg/cm 2. 适用于普通基材上的油漆和类似涂层中的铅。本试验方法的下限在0.36和0.75μg/cm之间 2. 取决于基材的性质。根据实验室间研究（ASTM报告F40-1004）期间获得的结果，估计该方法的适用范围可扩展至50μg/cm 2. . 1.4 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.5 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====== 5.1 本试验方法规定使用几分钟的测量时间来分析所涂油漆中的铅。它可用于确定所用油漆样品的面积质量Pb是否显著小于规范极限，因此未超过规范极限，或显著高于规定极限，因此超过规范极限。 5.2 如果使用本试验方法获得的值接近规范限值，则可能需要更精确的试验方法来确定铅含量是否超过规定限值。

1.1 This test method describes an energy dispersive X-ray fluorescence (EDXRF) procedure for determining the areal mass of Pb in mass per unit area in paint and similar coatings on common substrates of toys and consumer products, such as plastic, wood, steel, aluminum, zinc alloys or fabric. 1.2 This test method is applicable for homogeneous, single layer paint or similar coatings. The method does not apply to metallic coatings. 1.3 This test method is applicable for a range of Pb mass per unit area from 0.36 μg/cm 2 to approximately 10 μg/cm 2 for Pb in paint and similar coatings applied on common substrates. The lower limit of this test method is between 0.36 and 0.75 μg/cm 2 depending on the nature of the substrate. Based on the results obtained during the interlaboratory study (ASTM Report F40-1004), it is estimated that the applicable range of this method can be extended up to 50 μg/cm 2 . 1.4 The values stated in SI units are to be regarded as standard. Values given in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method provides for analysis of Pb in applied paint using measurement times on the order of several minutes. It can be used to determine whether the sample of applied paint has an areal mass of Pb either substantially less than a specification limit, and therefore does not exceed it, or substantially above the specified limit, and therefore exceeds it. 5.2 If the value obtained with this test method falls close to a specification limit, a more precise test method may be required to positively determine whether Pb content does or does not exceed the specified limit.