工作场所空气.空气中颗粒物中的金属和准金属.测量程序的评定要求

[中文适用范围]： 本文件规定了对采样到合适的收集基质上的空气颗粒中的金属和类金属进行测量的程序评估的性能要求和测试方法。 本文件规定了一种估计与随机误差和系统误差相关的不确定性的方法，并将它们结合起来计算整个测量程序的扩展不确定性，如 ISO 20581 中规定。 本文件适用于采样和分析的测量程序。 分阶段进行，但它没有规定样品收集、运输和储存的性能要求，因为这些要求在 EN 13205-1 和 ISO 15767 中得到解决。 本文件不适用于测量作为无机物存在的金属或准金属的程序气体或蒸气（例如汞、砷）或测量可能以颗粒/蒸气混合物形式存在的化合物（例如三氧化二砷）中的金属和类金属的程序。 [外文原描述]： This document specifies performance requirements and test methods for the evaluation of procedures for measuring metals and metalloids in airborne particles sampled onto a suitable collection substrate. This document specifies a method for estimating the uncertainties associated with random and systematic errors and combining them to calculate the expanded uncertainty of the measuring procedure as a whole, as prescribed in ISO 20581. This document is applicable to measuring procedures in which sampling and analysis is carried out in separate stages, but it does not specify performance requirements for collection, transport and storage of samples, since these are addressed in EN 13205-1 and ISO 15767. This document does not apply to procedures for measuring metals or metalloids present as inorganic gases or vapours (e.g. mercury, arsenic) or to procedures for measuring metals and metalloids in compounds that could be present as a particle/vapour mixture (e.g. arsenic trioxide).