工作场所空气 采用电感耦合等离子体质谱法测定空气中颗粒物中的金属和类金属

[中文适用范围]： 本文件规定了使用四极杆电感耦合等离子体质谱仪（ICP-MS）分析测试溶液的程序，包括单四极杆仪器和串联ICP-MS/MS，测试溶液是根据ISO 15202-1中规定的采样方法收集的空气中颗粒物样品制备而成。本文件规定了方法开发、性能检查和常规分析方法。注1：其他类型的ICP-MS（如磁扇区ICP-MS）不在本文件的范围内。根据本文件进行分析的测试溶液制备方法按照ISO 15202-2的规定进行。本文件适用于评估工作场所金属和类金属暴露水平，并与限值进行比较（例如参见EN 689[10]和ASTM E1370[8]）。本文件不适用于测定元素汞，因为汞蒸气不使用ISO 15202-1中规定的采样方法进行收集。本文件中规定的程序适用于在采样流量至少为2升/分钟、采样时间在0.25小时至8小时范围内的大多数金属和类金属的职业暴露限值的评估，适用于长期暴露限值和适用时的短期暴露限值的评估。注2：只要使用适当的分析同位素，本程序不会受到显著的光谱干扰（参见A.3条）。然而，不适当的基质匹配可能对结果产生不利影响。 [外文原描述]： This document specifies a procedure for the use of quadrupole inductively coupled plasma mass spectrometry (ICP-MS), including single-quadrupole instruments and tandem ICP-MS/MS, for analysing test solutions prepared from samples of airborne particulate matter collected as specified in ISO 15202-1. Method development, performance checks and a routine analysis method are specified in this document NOTE 1 Other types of ICP-MS (e.g. magnetic sector) are outside of the scope of this document. Test solutions for analysis by this document are prepared as specified in ISO 15202-2. This document is applicable to the assessment of workplace exposure to metals and metalloids for comparison with limit values (e.g. see EN 689[10] and ASTM E1370[8]). This document is not applicable to the determination of elemental mercury, since mercury vapour is not collected using the sampling method specified in ISO 15202-1. The procedure specified in this document is suitable for the assessment of exposure against the long-term exposure limits for most of the metals and metalloids for which occupational exposure limit values have been set, when sampling at a typical flow rate of at least 2 l min−1 for sampling times in the range 0,25 h to 8 h and for the assessment of exposure against the short-term exposure limits, where applicable. NOTE 2 The procedure is subject to no significant spectral interferences (see Clause A.3), provided that suitable analytical isotopes are used. However, inadequate matrix-matching can adversely affect results.