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Air Quality in Different Types of Archives
Mašková, Ludmila ; Smolík, Jiří
The study includes indoor/outdoor monitoring of the air quality in four archives in the Czech Republic, which representing different outdoor environments: Zlatá Koruna (rural), Třeboň (small city with seasonal tourism), Teplice (industrial area), and Prague (large city with traffic). The aim of this study is to investigate concentrations and sources of airborne PM and gaseous pollutants in the indoor environment of the archives, and to establish the relationship between the indoor and outdoor environment. In 2012 the measurements were performed at Třeboň and Zlatá Koruna during 4 intensive campaigns in different seasons of the year.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22013091913340 - PDF
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Aerosol Particles in the Indoor Environment of the Týn Church in Prague
Mašková, Ludmila ; Smolík, Jiří
Particulate matter inside cultural heritage buildings possesses different degrees of risk to materials. Particles not only cause soiling but are abrasive, provide sites for surface reactions and have a potential to damage artifacts due to their hygroscopic nature (Hachtfield, 2005, Nazaroff et al., 1990). The aim of this study was to investigate concentrations and sources of airborne PM in the indoor environment of the Týn Cathedral in Prague.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013091913200 - PDF
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Characterization of Filter Materials for Aerosol Research – Size Resolved Penetration
Ondráček, Jakub ; Zíková, Naděžda ; Ždímal, Vladimír
The comparison of penetrations for different types of filtration materials showed wide variety of penetration curves, MPPS and the maximum penetration. This study also confirmed our initial doubts about the standard filter efficiency testing method, regarding the used testing material, setting of MPPS and measuring only the total penetration of polydisperse aerosol. Therefore, such a study could serve also as a basis for improvements in the filter efficiency standard method, which seems to give insufficient and in some perspectives limited or even misleading information.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013091913090 - PDF
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Size Dependence of Incorporation of Gas Molecules into Aerosol Nanoparticles
Levdansky, V.V. ; Smolík, Jiří ; Ždímal, Vladimír ; Moravec, Pavel
The influence of size effects on the physicochemical transformations and transfer phenomena in the heterogeneous systems with nanoobjects attracts increasing attention of researchers. These problems are of interest for nanotechnology and atmospheric physics. Size effects can influence the cohesive energy as well as the activation energies of vacancy formation and diffusion of atoms in the nanoscale particles (Vanithakumari and Nanda, 2008). Phase transitions in aerosol systems with nanoscale particles (clusters) also depend on the nanoparticle size (Levdansky et al., 2010). Hear we discuss the size dependence of the mass accommodation coefficient in the aerosol system with nanoparticles.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013091912290 - PDF
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Generation of Pb/PbOx Nanoparticles for Inhalation Experiments
Moravec, Pavel ; Smolík, Jiří ; Ondráček, Jakub ; Vodička, Petr ; Fajgar, Radek
Health aspects of nanoparticles (NP′s) on living beings are considered to be important. However, the real data of the impact of NP′s inhalation are rather rare. A study of allocation of MnOx nanoparticles in organs of laboratory animals in inhalation chamber was presented by Večeřa and Mikuška (2012). For these experiments a source of continual generation of nanoparticles in duration of days or even weeks and in appropriate concentration is necessary. In this work a study of continual generation of Pb/PbOx nanoparticles in hot wall tube reactor are presented.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013091912130 - PDF
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Comparison of Particle Number Size Distributions in Three Central European Capital Cities
Zíková, Naděžda ; Borsós, T. ; Řimnáčová, Daniela ; Smolík, Jiří ; Wagner, Zdeněk ; Weidinger, T. ; Burkart, J. ; Steiner, G. ; Reischl, G. ; Hitzenberger, R. ; Schwarz, Jaroslav ; Salma, I. ; Ždímal, Vladimír
Health aspects of ultrafine aerosol particles in urban environment have been studied extensively in recent years (Salma et al., 2011; Putaud et al., 2010; Qian et al., 2007 etc.). Three main sources of the ultrafine particles have been defined – traffic, biomass burning, and atmospheric nucleation. However, the diurnal changes in intensities of individual sources are of considerable extent, similarly to the scale of variations in particle number concentrations due to meteorological phenomena.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013091814450 - PDF
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