Statistical analysis of PM10 data in urban region of Volos, Greece
© Aristotle University of Thessaloniki (6/2009)
Hourly measurements of particulate matter with an aerodynamic diameter less than 10 μm (PM10) recorded in the urban area of Volos, a medium-sized Greek coastal city, for a seven-year period, 2001-2007, are analysed. The main objective of this work is to study the typical behaviour of this air pollutant concerning diurnal and seasonal variations and meteorology dependencies.

Size distribution of metallic elements in particulate matter from a busy urban area
© Aristotle University of Thessaloniki (6/2009)
This study analyzed size distribution characteristics of metallic elements in airborne particulate matter (PM) collected from a busy urban area in a metropolitan city, Korea. PM samples were collected using an eight-stage cascade impactor during the spring and summer of 2008. Concentrations of the different PM size categories were determined using a micro-balance gravimetric method. Metallic elements on each PM filter were extracted ultrasonically using a 1:1 mixture of hydrochloric and nitric acid.

Influence of temporal variation of traffic volume and composition on air quality in urban areas
© Aristotle University of Thessaloniki (6/2009)
The aim of this paper is to investigate the influence of the traffic temporal evolution on the air pollution in urban areas using the city of Thessaloniki as a case study. Data from traffic counts were used and include traffic volume and composition in main roads and intersections of the Thessaloniki city centre.

Air pollution in residential areas from wood-fired heatings
© Aristotle University of Thessaloniki (6/2009)
The target of this study was to investigate the local air pollution from wood-fired heatings in residential areas. Particle-phase PM10 samples were collected at a residential site Dettenhausen near Stuttgart during winter 2005/06 and in Bechtoldsweiler near Hechingen during winter 2006/07.

Seasonal characteristics of particulate matter and metallic elements in a residential area in Ulsan, Korea
© Aristotle University of Thessaloniki (6/2009)
This study investigated mass and metallic elements composition of fine and coarse particles collected in an residential area of Ulsan, Korea. Daily sampling using an eight-stage cascade impactor were conducted from April through August 2008.

Frequency of occurrence of concentrations of air pollutants and their relationship to the established activities in Thriassion Plain – Greece
© Aristotle University of Thessaloniki (6/2009)
In many cases the understating of air pollution and air quality problems requires the knowledge not only of the actual concentrations of the air pollutants, but also of the frequency of occurrence of these concentrations. This information can be used to track the relationship between air pollutants’ concentrations and long-term changes over an area, such as the number of activities and their emissions.

Surface exchange of heat and carbon dioxide in a campus area
© Aristotle University of Thessaloniki (6/2009)
Urban atmosphere may play an important role for the future micro-climate change with respect to temperature and CO2 concentration. The campus area is liberal in global warming gas like CO2. This study was carried out to evaluate the feasibility of using the campus-rural environmental gradient in replacement of the IPCC mid-term scenario (after 30-50 years).

Atmospheric boundary layer characteristics during high ozone concentrations in the Rijeka Bay area
© Aristotle University of Thessaloniki (6/2009)
In this study, a time series from the ground level ozone monitoring station for Rijeka (Croatia) as well as the associated meteorological conditions were investigated. In the summer, during 13 to 19 August 2000, the afternoon hourly ozone measurements were consistently higher than the 180 ug m-3 which represents an information treshold of pollutant concentrations according to the national standards.

Peroxyacetil Nitrate (PAN) in urban atmosphere: levels and behavior
© Aristotle University of Thessaloniki (6/2009)
The peroxyacetil nitrate (PAN) is the most characteristic photoxidant, which is produced from NOx and reactive hydrocarbons in photochemical smog. In this paper daily PAN temporal evolution are compared with the Ox variable in different meteorological conditions.

Investigation on the behavior of pesticides in atmosphere
© Aristotle University of Thessaloniki (6/2009)
This paper shows an analytical approach based on GC analysis for evaluating the pesticide trend in atmosphere: in particular, the pesticides investigated are dimethoate, carbaryl, phorate, cypermethrin, chloridazon, phenmedipham and fluazifop-p-butyl. For the analytical methodology a linearity response was obtained (r2= 0.9995) in GC-NPD whereas the limits of detection are 0.001 ng μL-1 in GC-NPD with a Relative Standard Deviation below 9.5%. Finally, this approach has been succefully applied to real samples.

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