Αναζήτηση

Πλοήγηση

• Κοινότητες
• Συγγραφείς
• Έτος
• Τίτλοι
• Θέματα

Ο Χώρος μου

• Είσοδος

Indoor and outdoor particle number and mass concentrations in three houses in Athens. Sources, sinks and variability of aerosol parameters.

Konstantinos Eleftheriadis, Evangelia Diapouli, Angeliki A. Karanasiou, Sterios Vratolis, Ove Hermansen, Ian Colbeck, Lazaridis Michail

Πλήρης Εγγραφή

---

Περίληψη

The scope of this work was to characterize PM mass and number concentration at typical residential microenvironmentsin the centre of Athens and to examine the relative contribution of the indoor and outdoor sources. Three residential flatslocated in densely populated residential areas were studied, during a warm and cold period of 2002. PM10, PM2 and blackcarbon (BC) mass concentrations, as well as ultrafine and accumulation mode particle number size distributions wererecorded indoors and outdoors simultaneously. Outdoor concentrations of all size fractions were significant, and indicativeof urban sites affected by heavy traffic. Indoor levels were generally lower than the corresponding outdoor ones.Nevertheless, elevated indoor concentrations were recorded, caused by increased ambient air penetration in the indoormicroenvironments and/or indoor particle generation. The mean 24-hr indoor PM10 concentration at all residences was35.0 ± 10.7 μg/m3 during the warm period and 31.8 ± 7.8 μg/m3 during the cold period. The corresponding PM2concentration was 30.1 ± 11.1 μg/m3 and 27.2 ± 3.6 μg/m3 during warm and cold periods, respectively. Regressionanalysis of indoor and outdoor concentration data revealed that indoor BC may be considered mainly of outdoor origin. Alarge fraction of the outdoor-generated PM2 and ultrafine and accumulation mode particles also seems to penetrate indoors,causing elevated indoor levels. Regarding indoor particle generation, cooking was the strongest contributor in residentialmicroenvironments.

Υπηρεσίες