1.1 本试验方法详细说明了根据国际公约确定的可吸入粉尘浓度，范围为0.5 毫克/米 3. 至10 毫克/米 3. 取决于取样时间。使用多种市售旋风采样器中的任何一种进行取样和分析的详细说明。 1.2 试验方法的限制是过滤器上的最小粉尘重量为0.1 mg，最大荷载取决于采样器类型和采样时间。如果流速可以保持恒定，则可以在较高的载荷下使用试验方法。 1.3 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.4 本测试方法包含说明性注释，并非本方法强制性要求的一部分。 1.5 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法涵盖了工作场所大气中可吸入粉尘浓度的测定。 5.2 测试方法的变化在世界范围内用于确定与职业接触水平相关的合规性。 5.3 试验方法可用于验证防尘措施。 5.4 该测试方法也可用于研究职业环境中粉尘对健康的影响。

1.1 This test method provides details for the determination of respirable dust concentration defined in terms of international convention in a range from 0.5 mg/m 3 to 10 mg/m 3 in workplace atmospheres, depending on sampling time. Specifics are given for sampling and analysis using any one of a number of commercially available cyclone samplers. 1.2 The limitations on the test method are a minimum weight of 0.1 mg of dust on the filter, and a maximum loading dependent on sampler type and time of sampling. The test method may be used at higher loadings if the flow rate can be maintained constant. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This test method contains notes that are explanatory and are not part of the mandatory requirements of the method. 1.5 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. 1.6 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 method covers the determination of respirable dust concentration in workplace atmospheres. 5.2 Variations of the test method are in world-wide use for determining compliance relative to occupational exposure levels. 5.3 The test method may be used to verify dust control measures. 5.4 The test method may also be applied in research into health effects of dust in an occupational setting.