ISO 8518:2022 工作场所空气 微粒铅和铅化合物含量测定 火焰原子吸收光谱测定法
标准编号：ISO 8518:2022
中文名称：工作场所空气 微粒铅和铅化合物含量测定 火焰原子吸收光谱测定法
英文名称：Workplace air — Determination of particulate lead and lead compounds — Flame and electrothermal atomic absorption spectrometric methods
发布日期：2022-10
标准范围
本文件规定了测定工作场所空气中颗粒物铅和铅化合物的时间加权平均质量浓度的火焰和电热原子吸收光谱法。这些方法通常适用于ISO？7708，并进行静态（区域）采样。根据需要，它可以应用于其他健康相关的部分。样品溶出程序规定了热板或微波辅助消解或超声提取（见11.2）。当需要使用本文描述的溶出程序从试验气氛中存在的不溶性化合物中提取铅时，需要使用替代的、更剧烈的溶出程序（参见条款？5）。火焰原子吸收法适用于测定质量约为1？微克到200？每个样品μ g铅，未稀释[1]。电热原子吸收法适用于测定质量约为0.01？微克到0.5？每个样品μ g铅，未稀释[1]。超声提取程序已经过验证，可测定约20？微克到100？对于实验室产生的铅烟空气过滤器样品，每个样品含铅μ g[2]。本程序适用的空气中铅的浓度范围部分由用户选择的取样程序确定（见10.1）。
This document specifies flame and electrothermal atomic absorption spectrometric methods for the determination of the time-weighted average mass concentration of particulate lead and lead compounds in workplace air.These methods are typically applicable to personal sampling of the inhalable fraction of airborne particles, as defined in ISO 7708, and to static (area) sampling. It can be applied to other health-related fractions as required.The sample dissolution procedure specifies hot plate or microwave assisted digestion, or ultrasonic extraction (see 11.2). The use of an alternative, more vigorous dissolution procedure is necessary when it is desired to extract lead from compounds present in the test atmosphere that are insoluble using the dissolution procedures described herein (see Clause 5).The flame atomic absorption method is applicable to the determination of masses of approximately 1 μg to 200 μg of lead per sample, without dilution[1]. The electrothermal atomic absorption method is applicable to the determination of masses of approximately 0,01 μg to 0,5 μg of lead per sample, without dilution[1].The ultrasonic extraction procedure has been validated for the determination of masses of approximately 20 μg to 100 μg of lead per sample, for laboratory-generated lead fume air filter samples[2].The concentration range for lead in air for which this procedure is applicable is determined in part by the sampling procedure selected by the user (see 10.1).
标准预览图
