1.1 本试验方法包括在充分消化后用ICP-OES或ICP-MS测定炭黑中的金属含量。看见 3.1.5 – 3.1.7 有关定义。 1.2 这些试验方法所涵盖的浓度范围由仪器的灵敏度、用于分析的样本量和稀释体积确定。 1.3 金属的检测极限、灵敏度和最佳范围将随光谱仪的基质和型号而变化。 1.4 浓度高于校准曲线线性响应范围的元素可以通过额外的适当稀释来确定。 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 本试验涵盖炭黑中痕量金属的定量。重金属的定量可能有助于估计其对最终成品的贡献。金属成分可能会影响最终产品的应用性能，或者可能是一个监管问题。在设计最终产品时，材料用户有责任考虑元素的影响。 5.2 不能用硝酸消化的元素，如硅，不能通过本试验方法进行量化。 本标准描述了两种消解方法；微波酸消解和炉灰化。炉灰化方法可能不适用于焚烧过程中可能损失的某些挥发性元素。

1.1 This test method covers the determination of metal content in carbon black with ICP-OES or ICP-MS after adequate digestion. See 3.1.5 – 3.1.7 for definitions. 1.2 The concentration ranges covered by these test methods are determined by the sensitivity of the instruments, the amount of sample taken for analysis and the dilution volume. 1.3 Detection limits, sensitivity and optimum ranges of the metals will vary with the matrices and model of spectrometer. 1.4 Elements present at concentrations above the linear response range of the calibration curve can be determined with additional appropriate dilutions. 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 test covers the quantitation of trace metals in carbon black. The quantitation of heavy metals may help to estimate their contribution to a final finished article. Metal components may impact application properties of final products or may be a regulatory issue. It is the responsibility of the user of the material to consider the impact of the elements when designing a final product. 5.2 Elements which cannot be digested with nitric acid, such as silicon, cannot be quantified by this test method. This standard describes two digestion methods; microwave acid digestion and furnace ashing. The furnace ashing method may not be appropriate for certain more volatile elements which can be lost during incineration.