1.1 本试验方法包括活性炭活性水平的测定。丁烷活性（BA）在本文中定义为当活性炭在本试验方法中列出的条件下被丁烷饱和时，活性炭样品吸附的丁烷质量与样品质量的比率（百分比）。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 有关特定的警告语句，请参阅 7.1 . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 通过该试验方法测定的丁烷活性是活性炭在特定条件下从干燥空气中吸附丁烷的能力的量度。它可用于颗粒活性炭的质量控制和评价。丁烷活性是活性炭样品的微孔体积的指示。 该活性值不一定提供测试碳对其他吸附质或在其他操作条件下的有效性的绝对或相对测量。 5.2 丁烷活性试验可作为试验方法中四氯化碳活性试验的非臭氧消耗替代品 D3467 . 图1 显示了使用两种吸附质获得的活性值的实验相关性。 图1 丁烷与四氯化碳的相关性 注1: 本试验并非设计用于粉末活性炭，但当调节流速或时间或减少样品体积以将压降保持在可接受的值时，本试验已成功使用。

1.1 This test method covers determination of the activation level of activated carbon. Butane activity (BA) is defined herein as the ratio (in percent) of the mass of butane adsorbed by an activated carbon sample to the mass of the sample, when the carbon is saturated with butane under the conditions listed in this test method. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific warning statement, see 7.1 . 1.4 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 The butane activity as determined by this test method is a measure of the ability of an activated carbon to adsorb butane from dry air under specified conditions. It is useful for the quality control and evaluation of granular activated carbons. The butane activity is an indication of the micropore volume of the activated carbon sample. This activity number does not necessarily provide an absolute or relative measure of the effectiveness of the tested carbon for other adsorbates or at other conditions of operation. 5.2 The butane activity test can be used as a non-ozone depleting substitute for the carbon tetrachloride activity test in Test Method D3467 . Fig. 1 shows an experimental correlation of activity values obtained using the two adsorbates. FIG. 1 Butane Versus Carbon Tetrachloride Correlation Note 1: This test has not been designed for use with powdered activated carbon, but it has been used successfully when the flow rate or time are adjusted or the sample volume is decreased to keep the pressure drop at an acceptable value.