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首页> 外文期刊>International journal of PIXE >PIXE ANALYSIS VS. GRAVIMETRY TO MONITOR THE MASS CONCENTRATION OF ATMOSPHERIC AEROSOLS IN THE RESPIRABLE FRACTION
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PIXE ANALYSIS VS. GRAVIMETRY TO MONITOR THE MASS CONCENTRATION OF ATMOSPHERIC AEROSOLS IN THE RESPIRABLE FRACTION

机译：像素分析与重力法监测可呼吸馏分中大气气溶胶的质量浓度

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摘要

It is demonstrated in this work, that PIXE is a good mass indicator for suspended particles in urban environments. Results are presented for several samplings performed in urban and other environments in Chile and other countries. Aerosols were collected on filters operated by a Stacked Filter Unit (SFU) in the range of particles < 15 pm (PMu) and < 10 (am (PMio), mainly the respirable fraction. For samplings performed in downtown Santiago, the sum of the concentrations of the elements detected by PIXE correlated well with the indices of respirable suspended particles (RSP) measured by gravimetry. There was no high correlation for other samplings, near a crushing plant and near mineral storage. On the average, the sum of the PKE results for Santiago's aerosols represents about the 15% of the total mass collected in the respirable fraction. A measurement of collection efficiency for the 0.4 um Nuclepore filter was performed by means of PKE and gravimetry. These results were UPKE = 0.98 and !)""""=0.96, for the PKE and the gravimetric method.
机译：这项工作表明，PIXE是城市环境中悬浮颗粒的良好质量指标。给出了在智利和其他国家/地区在城市和其他环境中进行的几次采样的结果。在由堆叠式过滤器单元（SFU）操作的过滤器上收集的气溶胶中，颗粒物的范围在<15 pm（PMu）和<10（am（PMio））之间，主要是可吸入部分。 PIXE检测到的元素的浓度与重量分析法测得的可吸入悬浮颗粒物（RSP）的指数相关性很好，其他采样（在破碎厂附近和矿藏附近）没有很高的相关性，平均而言，PKE的总和圣地亚哥的气溶胶的结果约占可呼吸部分收集的总质量的15％。通过PKE和重量分析法对0.4 um Nuclepore过滤器的收集效率进行了测量。结果为UPKE = 0.98 ，!）“”对于PKE和重量分析法，“” = 0.96。

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