期刊名称：Revista Internacional de Contaminación Ambiental
印刷版ISSN：0188-4999
出版年度：1997
卷号：13
期号：2
页码：81-85
语种：Spanish
出版社：Centro de Ciencias de la Atmósfera
摘要：A study of the elemental concentrations found in samples of atmospheric aerosols from three sites in the Mexico City Metropolitan Area is presented. The samples were collected during the Winter and Spring of 1994 using Stacking Filter Units (SFU), devised to separate particles with sizes between 2.5 µm and 15 µm (coarse fraction) and smaller than 2.5 µm (fine fraction). Elemental analyses were performed using Particle Induced X-ray Emission (PIXE), which allowed simultaneous detection of 14 elements heavier than Al. By means of analysis of variance, comparisons among the elemental contents in the three sites are given for both fractions, showing that, although variations are observed for some elements, in the fine fraction no definite pattern is found with respect to the site. On the other hand, in the coarse fraction the soil-derived elements Si, K, Ca, Ti, and Fe are the most important contributors to total mass.
其他摘要：A study of the elemental concentrations found in samples of atmospheric aerosols from three sites in the Mexico City Metropolitan Area is presented. The samples were collected during the Winter and Spring of 1994 using Stacking Filter Units (SFU), devised to separate particles with sizes between 2.5 µm and 15 µm (coarse fraction) and smaller than 2.5 µm (fine fraction). Elemental analyses were performed using Particle Induced X-ray Emission (PIXE), which allowed simultaneous detection of 14 elements heavier than Al. By means of analysis of variance, comparisons among the elemental contents in the three sites are given for both fractions, showing that, although variations are observed for some elements, in the fine fraction no definite pattern is found with respect to the site. On the other hand, in the coarse fraction the soil-derived elements Si, K, Ca, Ti, and Fe are the most important contributors to total mass.
