Chemical Industry and Chemical Engineering Quarterly 2015 Volume 21, Issue 1-2, Pages: 179-187
https://doi.org/10.2298/CICEQ140212020L
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PM and CO2 variability and relationship in the different school environments
Lazović Ivan (Vinca Institute of Nuclear Sciences, Belgrade, Serbia)
Jovašević-Stojanović Milena (Vinca Institute of Nuclear Sciences, Belgrade, Serbia)
Živković Marija (Vinca Institute of Nuclear Sciences, Belgrade, Serbia)
Tasić Viša (Mining and Metallurgy Institute Bor, Bor, Serbia)
Stevanović Žarko (Vinca Institute of Nuclear Sciences, Belgrade, Serbia)
Indoor air quality (IAQ) is very important for children health and
well-being, since children are particularly vulnerable and sensitive on
presence of air pollutants. This study was performed in two naturally
ventilated schools located in the same municipality. First school is located
in urban area, at residential - industrial site, while the other school is
situated in rural area. School buildings were chosen based on their urban
environment features. The measurements were carried out in heating as well
as in non-heating period in duration of five consecutive working days. The
objective of the study was to analyze IAQ in the classrooms with special
emphasis on levels and diurnal variations of particulate matter (PM10 and
PM2.5), carbon dioxide (CO2) and nitrogen dioxide (NO2) in occupied and
unoccupied school classrooms. In this paper, the CO2 concentrations were
measured at both indoor and outdoor environments. Concentrations of CO2
higher than 1000 ppm were regularly detected in the classrooms during
teaching hours. Indoor concentrations of PM10 were not exceeded the
guideline, daily average, value of 50 μg/m3. Concentrations of PM2.5 were
exceeded the guideline, daily average, value of 25 μg/m3 in both school
during heating period. Concentrations NO2 were not exceeded the guideline
value of 200 μg/m3. Ventilation rates were calculated and compared with the
prescribed limits. In both occupied and unoccupied periods high correlation
between CO2 and PM concentrations was determined.
Keywords: indoor air quality (IAQ), particulate matter, carbon dioxide, nitrogen dioxide
Projekat Ministarstva
nauke Republike Srbije, br. III42008