1.1 本试验方法提供了在化学处理过的过滤器和撞击式除尘器上从大气中分离和收集颗粒和水溶性气态氟化物的程序。采样率可能在30%之间变化 升/分钟（1.0 英尺 3. /最小）至15 L/min（0.5 英尺 3. /min）根据大气氟化物浓度进行更长的采样。本试验方法不适用于不溶于水的气态氟化合物。 1.2 试验方法有几个局限性: 1.2.1 尽管经酸处理的中等截留性预滤器允许HF通过，但它仅将颗粒物的通过限制在1μm左右。因此，较小的颗粒物可能会通过过滤器，并被收集在或通过冲击式除尘器。 1.2.2 在更换经酸处理的预滤器之前，使用本试验方法采集的最大样本量建议为12 m 3. . 本建议旨在最大限度地减少颗粒物积聚造成的任何影响。 1.3 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.4 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。 有关具体预防说明，请参阅 7.4.3 . 1.5 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 大气中颗粒和水溶性气态氟化物的来源包括肥料、铝还原厂、磷酸盐处理器、钢厂、燃煤作业、砖瓦制造商和各种不太重要的来源 ( 5. ) . 当动物或人类摄入或吸入或被植物吸收时，气态氟化物会引起不良影响。本试验方法中记录的程序提供了一种测定大气中颗粒和水溶性气体氟化物的方法。 5.2 本试验方法提供了分离和收集颗粒和水溶性气态氟化物的方法，并提供了便于分析的样品。

1.1 This test method provides a procedure for separation and collection of particulate and water-soluble gaseous fluorides from the atmosphere on a chemically treated filter and in an impinger. The sampling rate may vary from 30  L/min (1.0 ft 3 /min) to 15 L/min (0.5 ft 3 /min) for longer sampling periods depending on the atmospheric fluoride concentration. This test method is not intended to be applied to gaseous fluorine compounds that are not water-soluble. 1.2 There are several limitations of the test method: 1.2.1 Although the acid-treated, medium retentive, prefilter has been shown to allow passage of HF, it restricts passage of particulate matter only as small as about 1 μm. Thus, smaller particulate matter may pass through the filter and be collected in or pass through the impingers. 1.2.2 The maximum sample volume to be taken using this test method prior to changing the acid-treated prefilter is recommended as 12 m 3 . This recommendation is made to minimize any effects due to particulate matter build-up. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.4 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 specific precautionary statements, see 7.4.3 . 1.5 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 Sources of particulate and water-soluble gaseous fluorides in the atmosphere include the fertilizers, aluminum reduction plants, phosphate processors, steel mills, coal burning operations, brick and tile manufacturers, and various less significant sources ( 5 ) . Gaseous fluorides can cause adverse effects when ingested or inhaled by animals or humans, or absorbed by plants. The procedures documented in this test method provide a means of determining of particulate and water soluble gaseous fluoride in atmospheres. 5.2 This test method provides a means of separation and collection of particulate and water soluble gaseous fluoride and provides samples that are convenient to analyze.