1.1本试验方法描述了通过原子发射光谱法对铝及其合金的分析。待分析的铝试样可以是冷铸圆盘、铸件、箔、薄板、板材、挤压或其他锻造形式或形状。下表列出了该方法范围内涵盖的要素。 注1 上述范围内给出的浓度范围是通过选定标准物质的合作测试（ILS）建立的。为每个元素显示的范围并不能证明该元素的实际可用分析范围。根据单个仪器的能力、使用的特定元素波长的光谱特性和适当参考材料的可用性，可用分析范围可以扩大或缩小。 1.2本试验方法主要适用于规程E 716中定义的冷铸圆盘的分析。可以分析其他形式，前提是:（1）它们足够大，可以防止过热；（2）它们允许加工，以提供一个干净、平坦的表面，从而在试样和火花架之间形成密封；（3）具有类似冶金条件和化学成分的参比材料可用。 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。 第10节给出了具体的安全和健康声明。 ====意义和用途====== 铝及其合金的冶金性能在很大程度上取决于化学成分。精确和准确的分析对于获得所需的性能、满足客户规范以及帮助减少因劣质材料而产生的废料至关重要。 本试验方法适用于规程E 716中定义的冷铸试样 如果有合适的参考材料，也可以应用于其他类型的样品。此外，如实施规程E 716所述，可以使用适当的模具熔化其他样品形式并将其铸造到圆盘中 . 然而，应注意的是，一些元素（例如镁）容易形成氧化物，而另一些元素（例如钠、锂、钙和锶）是挥发性的，在熔融过程中可能会不同程度地损失。

1.1 This test method describes the analysis of aluminum and its alloys by atomic emission spectrometry. The aluminum specimen to be analyzed may be in the form of a chill cast disk, casting, foil, sheet, plate, extrusion or some other wrought form or shape. The elements covered in the scope of this method are listed in the table below. Note 1 The concentration ranges given in the above scope were established through cooperative testing (ILS) of selected reference materials. The range shown for each element does not demonstrate the actual usable analytical range for that element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific element wavelength being used and the availability of appropriate reference materials. 1.2 This test method is suitable primarily for the analysis of chill cast disks as defined in Practices E 716. Other forms may be analyzed, provided that: (1) they are sufficiently massive to prevent undue heating, (2) they allow machining to provide a clean, flat surface, which creates a seal between the specimen and the spark stand, and (3) reference materials of a similar metallurgical condition and chemical composition are available. 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. Specific safety and health statements are given in Section 10. ====== Significance And Use ====== The metallurgical properties of aluminum and its alloys are highly dependant on chemical composition. Precise and accurate analyses are essential to obtaining desired properties, meeting customer specifications and helping to reduce scrap due to off-grade material. This test method is applicable to chill cast specimens as defined in Practice E 716 and can also be applied to other types of samples provided that suitable reference materials are available. Also, other sample forms can be melted-down and cast into a disk, using an appropriate mold, as described in Practice E 716 . However, it should be noted that some elements (for example, magnesium) readily form oxides, while some others (for example, sodium, lithium, calcium, and strontium) are volatile, and may be lost to varying degrees during the melting process.