Suspended particles (SP) are one of the problems of most concern about air pollution in urban areas, due to its adverse effects on health and environment. Epidemiological studies have shown that SP smaller than 10 microns (PM 10 ) are particularly dangerous. Regarding ambient air monitoring, the reference method for estimating human exposure to SP, is the high volume method (HV), which was established through a collaborative study, based on measurements of total suspended particles (TSP). The aim of this study was to determine the applicable quality indicators to HV measurement of SP less than 10 microns using PM 10 heads and cascade impactors (ImpC). Samples were taken with samplers operating simultaneously in the same place, following EPA reference method IO.2.1. Limits of detection (LoD) and quantification (LoQ) for PM 10 measurements were 0.56 and 2.71 μg/m 3 respectively, which also apply for ImpC stage 6 (E6). For ImpC stages E1 to E5, LoD was 0.54 μg/m 3 and LoQ was 1.38 μg/m 3 . Repeatability of the method was 3.04 % for PM 10 , and ranged from 1.7 % (E2) to 6.8 % (E3). Statistical analysis showed no significant difference between means of concentrations obtained simultaneously with different samplers (P > 0.05). According to these results, the method is suitable for PM 10 and smaller fractions (using cascade impactors) measurements and can give accurate results in a wide range of environmental conditions.
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机译：悬浮颗粒（SP）由于对健康和环境造成不利影响，是城市空气污染最令人关注的问题之一。流行病学研究表明，小于10微米（PM 10）的SP特别危险。关于环境空气监测，估计人体暴露于SP的参考方法是高容量方法（HV），该方法是通过合作研究基于总悬浮颗粒（TSP）的测量而建立的。这项研究的目的是确定使用PM 10压头和级联冲击器（ImpC）对小于10微米的SP进行HV测量的适用质量指标。按照EPA参考方法IO.2.1，在同一地点同时操作的采样器中采集样品。 PM 10测量的检出限（LoD）和定量限（LoQ）分别为0.56和2.71μg/ m 3，这也适用于ImpC阶段6（E6）。对于ImpC阶段E1至E5，LoD为0.54μg/ m 3，LoQ为1.38μg/ m 3。该方法对PM 10的重复性为3.04％，范围为1.7％（E2）至6.8％（E3）。统计分析表明，使用不同采样器同时获得的浓度平均值之间无显着差异（P> 0.05）。根据这些结果，该方法适用于PM 10和更小的馏分（使用级联撞击器）的测量，并且可以在各种环境条件下给出准确的结果。
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