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National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Application of difusion denuder for sampling of carbonaceous aerosols and analysis of OC/EC
 Mikuška, Pavel ; Večeřa, Zbyněk ; Bartošíková, Anna ; Maenhaut, W. ; Chi, X.
Annular diffusion denuder for sampling of carbonaceous aerosols on quartz filter without interferences of gaseous organic pollutants and atmospheric oxidants is described. Exposed filters are analysed off-line for content of orgnic and elementar carbon in collected aerosols.
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Continuous measurement of chemical composition of atmospheric aerosols
 Mikuška, Pavel ; Večeřa, Zbyněk
New continuous collector of atmospheric aerosols using deionized water is described.Collector allows on-line analysis of chemical composition in water soluble aerosol components in real time with time resolution of a few minutes without interferences of gaseous pollutants.
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Application of diffusion denuder for elimination of sampling artefacts of carbonaceous aerosols
 Mikuška, Pavel ; Večeřa, Zbyněk ; Broškovičová, Anna ; Maenhaut, W. ; Chi, X.
An annular diffusion denuder was developed, enabling elimination of positive sampling artefacts and inteference of oxidants during sampling of organic aerosols on a quartz filter, placed in series behind the denuder at sampling flow-rate 16,6 l/min.
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Results of monitoring of gaseous pollutants at station Košetice
 Mikuška, Pavel ; Večeřa, Zbyněk ; Šantroch, J. ; Váňa, M. ; Pekárek, J.
Nitrogen dioxide and ozone were monitored at the background station Košetice using commercial monitors and UIACH monitors, ammonia, nitrous acid and nitric acid by means of UIACH analysers. For NO2 and O3, the agreement of results provided by commercial and UIACH monitors was verified.
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The continuous determination of trace concentrations of ammonia in air
 Dobšík, Martin ; Mikuška, Pavel ; Večeřa, Zbyněk
A continuous method for fast, sensitive and selective determination of trace concentrations of ammonia in air is described. The method is based on the combination of continuous preconcentration of ambient ammonia at cylindrical wet effluent diffusion denuder into deionized water and subsequent on-line conductometric analysis effluent.
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New sampler for continuous determination of soluble fraction of atmospheric aerosols
 Mikuška, Pavel ; Večeřa, Zbyněk
A new sampler, enabling continuous sampling of atmospheric aerosols by deionized water, was developed. Using fast and sensitive detection methods, the analysis of water soluble aerosol components is possible on-line, in real time with low time resolution. By the combination of the sampler and the anular diffusion denuder, the interferences of gas pollutants are elimined. The aerosols withparticle diameter > 0.3 .mi.m are quantitatively collected at flow rates of air 5 l/min, and water 0.5 l/min, respectively. The applicability of the sampler was successfully verified.
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