1.1 本试验方法涵盖了通过乙酸从用于食品制备领域的釉面瓷砖中提取的铅和镉的精确测定。提取过程可能会加速铅从釉料中的释放，因此，这是一项严格的测试，在此类瓷砖的实际使用条件下不太可能匹配。本试验方法针对铅和镉。 1.2 以英寸-磅为单位的数值应视为标准值。 括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 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====== 4.1 有几种测试方法可用于测量餐具和炊具中铅和镉的释放（见测试方法 C738 和 C1034 和规格 C1035 ). 这些标准用作控制，以确保保护人口免受可能的健康危害。 4. 这种潜在危险源于配方、使用、烧制的釉料和装饰不当。本试验方法专门针对准备过程中与食品接触的瓷砖（例如台面瓷砖）。

1.1 This test method covers the precise determination of lead and cadmium extracted by acetic acid from glazed ceramic tile that are intended for use in areas of food preparation. The procedure of extraction may be expected to accelerate the release of lead from the glaze and to serve, therefore, as a severe test that is unlikely to be matched under the actual conditions of usage of such ceramic tile. This test method is specific for lead and cadmium. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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 ====== 4.1 There are several test methods available to measure the lead and cadmium release from dinnerware and cookware (see Test Methods C738 and C1034 and Specification C1035 ). These standards are used as a control to ensure the protection of the population against a possible health hazard. 4 This potential hazard arises with improperly formulated, applied, fired glazes and decorations. This test method deals specifically with ceramic tile that are intended to come in contact with food during its preparation (for example, counter top tile).