Characterization of Airborne Particles in the Baroque Hall of the National Library in Prague

0354088 - ÚCHP 2011 SI eng J - Journal Article
Mašková, Ludmila - Smolík, Jiří - Džumbová, Lucie - Ondráček, Jakub - López-Aparicio, S. - Grontoft, T. - Stankiewicz, J.
Characterization of Airborne Particles in the Baroque Hall of the National Library in Prague.
e-Preservation Science. -, č. 7 (2010), s. 141-146. ISSN 1581-9280.
[9th Indoor Air Quality Meeting. Chalon-sur-Saone, 21.04.2010-23.04.2010]
R&D Projects: GA MŠMT OC09049
Grant - others:MF NF(CZ) A/CZ0046/2/0001
Institutional research plan: CEZ:AV0Z40720504
Keywords : indoor/outdoor aerosol * mass size distribution * chemical composition
Subject RIV: CF - Physical ; Theoretical Chemistry

To determine the composition of particulate matter (PM) in the Baroque Library Hall, size-resolved sampling has been performed during three intensive campaigns in spring, summer and winter 2009. Particles were collected and segregated into 10 size fractions (0.025-10 μm) using two Berner type Low Pressure Impactors, sampled in parallel from the indoor and outdoor environment. Collected samples were analysed gravimetrically and by Ion Chromatography (IC). Typical mass size distributions were bimodal with minimum at about 1 μm, lower concentrations indoors and submicron range shifted to smaller particles. The results of IC revealed that ammonium sulphate and nitrate form about 30% of outdoor and about 20% of indoor mass of submicron fractions of PM, with indoor nitrate concentrations decreasing to zero. Most of the ammonium nitrate evaporated after penetration indoors probably due to higher indoor temperatures and fast surface deposition of gaseous nitric acid.
Permanent Link: http://hdl.handle.net/11104/0193166