1.1 本试验方法包括使用模拟胃液酸势的萃取剂从艺术材料中萃取金属。该试验方法类似于规范中的提取方法 F963 ，但需要在体温下而不是室温下进行提取步骤。本试验方法中规定的提取程序比规范中规定的更为严格 F963 因为该过程会导致大量金属的提取。 1.2 本试验方法改编自欧洲玩具安全标准EN 71-3:1994，但与之不同的是，加工蜡或油基产品不需要溶剂萃取步骤，也没有规定具体的可接受金属含量。 1.3 本试验方法的基本原理见 附录X1 . 1.4 该测试方法应整体用于艺术材料，而不是艺术材料成分。 与从测试成分中推断相比，对艺术材料整体进行测试有望对可溶性金属做出更准确的估计。 1.5 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。 1.6 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、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 这种酸提取方法旨在表明艺术材料中金属在弱酸介质中的溶解度。本试验方法可用于指示易于吸收的金属量。它并不意味着取代 体内 金属吸收试验。 6. 其他相关信息（如可用）应包括在含金属art材料的整体毒理学评估中，例如相关金属的物理化学性质、毒代动力学（吸收、分布、代谢和排泄）和毒性机制。 5.2 当结果为250 ppm或更少时，该试验方法可观察到最大金属萃取水平。如果结果大于250 ppm，则应将萃取剂体积增加至100 mL。 7.

1.1 This test method covers the extraction of metals from art materials using an extractant that simulates the acid potential of gastric juice. This test method is similar to the extraction method in Specification F963 , except that it requires conducting extraction steps at body temperature instead of at room temperature. The extraction procedure specified in this test method is more rigorous than that noted in Specification F963 because the procedure causes the extraction of a larger quantity of metal. 1.2 This test method is adapted from the European Toy Safety Standard, EN 71-3:1994 but differs from it in that a solvent extraction step is not required for processing waxes or oil-based products and no specific acceptable metal levels are specified. 1.3 The rationale for this test method is discussed in Appendix X1 . 1.4 This test method should be used on the art material as a whole and not an art material ingredient. Testing the art material as whole would be expected to give a more accurate estimate of soluble metal than from an extrapolation from testing ingredients. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 acid extraction method is intended to indicate the solubility of metals from art materials in a weak acid medium. This test method may be useful as one indicator of the amount of metal that is readily available for absorption. It is not meant as a replacement for in vivo tests of absorption of a metal. 6 Other relevant information, when available, should be included in the overall toxicological assessment of metal-containing art materials, such as physico-chemical properties, toxicokinetics (absorption, distribution, metabolism and excretion), and mechanisms of toxicity of the metal(s) of interest. 5.2 Maximum levels of metal extraction are seen with this test method when results are 250 ppm or less. If results are greater than 250 ppm, the extractant volume should be increased to 100 mL. 7