1.1 本试验方法包括通过火焰原子吸收分光光度法（FAAS）收集、溶解和测定工作场所大气中的痕量金属。 1.2 21种金属的估计方法检测限值和最佳工作浓度范围见 表1 。 1.3 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 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。 （具体的安全预防说明见第节 9 ） 1.5 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 许多行业的工人因吸入有毒金属而面临健康风险。工业卫生学家和其他公共卫生专业人员需要确定控制工人接触的措施的有效性，这通常通过测量工作场所的空气来实现。暴露于某些含金属颗粒物已被证明会导致皮炎、皮肤溃疡、眼部问题、化学性肺炎和其他身体疾病 ( 16 ) 。 3. 5.2 FAAS能够以联邦、州和地方职业健康和空气污染法规要求的水平定量测定空气样本中的许多金属。分析结果可用于评估工作场所暴露于工作场所空气中的金属。在进行工作场所空气采样之前，必须考虑到所关注金属的相关职业接触限值（OELV），调查FAAS用于元素分析以进行接触评估的适用性。

1.1 This test method covers the collection, dissolution, and determination of trace metals in workplace atmospheres, by flame atomic absorption spectrophotometry (FAAS). 1.2 The estimated method detection limits and optimum working concentration ranges for 21 metals are given in Table 1 . 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 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. (Specific safety precautionary statements are given in Section 9 .) 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 The health of workers in many industries is at risk through exposure by inhalation to toxic metals. Industrial hygienists and other public health professionals need to determine the effectiveness of measures taken to control workers' exposures, and this is generally achieved by making workplace air measurements. Exposure to some metal-containing particles has been demonstrated to cause dermatitis, skin ulcers, eye problems, chemical pneumonitis, and other physical disorders ( 16 ) . 3 5.2 FAAS is capable of quantitatively determining many metals in air samples at the levels required by federal, state, and local occupational health and air pollution regulations. The analysis results can be used for the assessment of workplace exposures to metals in workplace air. The suitability of FAAS for elemental analysis for exposure assessment purposes must be investigated prior to carrying out workplace air sampling, in consideration of relevant occupational exposure limit values (OELVs) for metals of concern.