1.1 本试验方法用于测定工作场所空气中氯化氢气体和盐酸雾、溴化氢蒸汽和氢溴酸雾以及硝酸蒸汽和雾的时间加权平均质量浓度。样品在碱浸渍石英纤维过滤器上收集，并通过离子色谱法进行分析。该测试方法也适用于测量短期暴露。 1.2 本试验方法假设使用适当和适用的ASTM工作场所空气采样国际标准采集空气样本。 1.3 该程序旨在进行职业和环境卫生监测。 1.4 由于不同品牌和型号的合适仪器之间存在差异，因此未提供详细的操作说明。相反，分析员应遵循特定仪器制造商提供的说明。本标准不涉及不同装置的比较精度或相同品牌和型号仪器之间的精度。 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 本试验方法包含注释，这些注释是解释性的，不是本标准强制性要求的一部分。 1.7 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。 1.8 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 暴露于工作场所空气中的无机酸会对皮肤、眼睛和呼吸道造成刺激，已制定了空气中盐酸、氢溴酸和硝酸的暴露限值，以降低潜在受影响工人的暴露风险 ( 1. ) . 4. 为了进行暴露评估和降低风险，需要使用挥发性无机酸的采样和分析方法。

1.1 This test method is intended for use in the determination of the time-weighted average mass concentration of hydrogen chloride gas and hydrochloric acid mist, hydrogen bromide vapor and hydrobromic acid mist, and nitric acid vapor and mist in workplace air. The samples are collected on an alkali-impregnated quartz fiber filter and analyzed by ion chromatography. This test method is also appropriate for measuring short term exposures. 1.2 This test method assumes that air samples are collected using appropriate and applicable ASTM International standards for sampling of workplace air. 1.3 The procedure is targeted for occupational and environmental hygiene monitoring purposes. 1.4 No detailed operating instructions are provided because of differences among various makes and models of suitable instruments. Instead, the analyst shall follow the instructions provided by the manufacturer of the particular instrument. This standard does not address comparative accuracy of different devices or the precision between instruments of the same make and model. 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 test method contains notes, which are explanatory and not part of mandatory requirements of the standard. 1.7 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. 1.8 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 Exposure to inorganic acids in workplace air can cause irritations of the skin, eyes and respiratory tract, and exposure limits for hydrochloric acid, hydrobromic acid and nitric acid in air have been established to reduce exposure risks to potentially affected workers ( 1 ) . 4 Sampling and analytical methods for volatile inorganic acids are needed for exposure assessment and risk reduction purposes.