|
|
Aerosol Particles in the Indoor Environment of the National Library in Prague
Andělová, Ludmila ; Smolík, Jiří ; Džumbová, Lucie ; Ondráček, Jakub ; Součková, M. ; Stankiewicz, J. ; López-Aparicio, S. ; Grontoft, T.
Particulate matter in the indoor air in exhibition rooms is a serious risk to works of art stored there. In the Baroque Library Hall of the National Library we examined concentrations and compositions of aerosol particles during 4 intensive campaigns in different seasons of year. Time variation of fine particles concentration indicated outdoor origin with traffic as the most probable source. The concentration of coarse particles revealed periodic increase and decrease, corresponding to beginning and end of visiting hours, indicating visitors as a source of these particles. The major water-soluble inorganic components of the fine particle mode were ammonium sulphate and nitrate, with indoor nitrate concentrations decreasing to zero. It was apparently caused by evaporation of ammonium nitrate after penetration indoors. Crustal elements in both indoor and outdoor samples were predominantly associated with coarse particles.
|
|
|
Pollutants in the Indoor Air in the Baroque Library Hall of the National Library in Prague
Mašková, Ludmila ; Smolík, Jiří ; Džumbová, Lucie ; Ondráček, Jakub ; López-Aparicio, S. ; Grontoft, T. ; Stankiewicz, J.
Indoor air pollution in the exhibition rooms is a serious risk to works of art stored there. In the Baroque Library Hall of the National Library we examined concentrations and compositions of aerosol particles, temperature, relative humidity and concentrations of gaseous pollutants CO2, O3, SO2, NO2, NH3, HNO3 and formic and acetic acids. Time variation of fine particles concentration indicated outdoor origin with traffic as the most probable source. The concentration of coarse particles revealed periodic increase and decrease, corresponding to beginning and end of visiting hours, indicating visitors as a source of these particles. The major water-soluble inorganic components of the fine particle mode were ammonium sulphate, nitrate, and ammonium, with indoor nitrate concentrations decreasing to zero. It was apparently caused by evaporation of ammonium nitrate after penetration indoors. This process also increased indoor concentrations of ammonia.
|
|
| |
|
|
Traffic Contribution to the Local Air Pollution
Smolík, Jiří ; Bízek, V. ; Schwarz, Jaroslav ; Ždímal, Vladimír ; Ondráček, Jakub ; Džumbová, Lucie ; Mašková, Ludmila
Particles emitted from the road transport represent one of the major aerosol source in the city environment. Due to the fact that increased aerosol concentrations are connected with higher morbidity and mortality, it is necessary to characterize and quantify these emissions in order to evaluate their effect on human health and environment. Road transport emissions include direct particle emissions from exhausts from attrition of brake lining, tires and roads and resuspended particles and indirect emissions in the form of secondary particles produced by chemical reactions of gaseous emissions.
|
|
| |
guest ::
