UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 2:07
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Conference: Bucharest University Faculty of Physics 2003 Meeting


Section: Atmosphere and Earth Science; Environment Protection


Title:
Study of the Air Pollution Related to Particulate Matter (PM)


Authors:
Madalina Tronea, Sabina Stefan


Affiliation:
University of Bucharest, Faculty of Physics, P.O.Box MG-11, Bucharest


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Keywords:


Abstract:
Today, the interest in aerosol particles is high mainly because of their effect on human health and their role in climate change. They have also a determining effect on visibility and contribute to the soiling of monuments. The aim of this paper is the study of Particulate Matter (PM), which is another way of referring to the aerosol particles. The climate effects community tends to use aerosol particles, whereas the health effects community prefers to use particle matter or PM. It is interesting to know which is the relationship between PM2.5, PM10 and meteorological and orographical conditions to conclude about the effects of the presence of PM in ambient. In this paper by using the data files of concentrations for some stations the diurnal, seasonal and annual variation of the PMx mean concentrations are shown the some conclusions, are extract. There is no universal (i.e. valid for all sites) ratio between PM2.5 and PM10 mass concentrations, although fairly constant ratios do exist at individual sites. Observations of PM2.5/PM10 ratios, particle size distributions and chemical composition indicate that traffic is responsible for the high PM10 and PM2.5 concentrations in urban areas, either through the contribution of carbonaceous species and nitrate in the fine and coarse fraction of the aerosol (at near-city and urban background sites) or due to the contribution of re-suspended dust to the coarse fraction (at kerbside sites). At polluted sites PM10, PM2.5 and other aerosol parameters are significantly higher during winter. This is at least partially due to meteorology: the dispersion of pollutants is least in winter, when the mixed boundary layer height is reduced.