National Repository of Grey Literature 8 records found  Search took 0.01 seconds. 
Determination of fast changes in concentrations of volatile organic compounds using diffusion denuder
Křůmal, Kamil ; Mikuška, Pavel
Determination of fast changes in concentrations of volatile organic compounds was performed using wet effluent diffusion denuder, which allows collection of samples in 2-min intervals.
Comparison of techniques for determination of monoterpenes in forested area
Křůmal, Kamil ; Večeřová, Kristýna ; Holišová, Petra ; Urban, Otmar ; Pallozzi, E. ; Guidolotti, G. ; Calfapietra, C. ; Večeřa, Zbyněk
In this work three different techniques (1 online and 2 offline) for determination of monoterpenes in forest were compared. Monoterpenes were determined by PTR-MS (Proton Transfer Reaction Mass Spectrometer), cylindrical wet effluent diffusion denuders and tenax tubes.
Microbicidal properties and chemical composition of essential oils
Křůmal, Kamil ; Večeřa, Zbyněk
The microbicidal properties of 6 essential oils (EOs; Lavandula angustifolia, Cymbopogon nardus, Citrus aurantifolia, Juniperus communis, Myrtus communis and Cinnamomum zeylanicum ) for 17 microorganisms were determined using the vapour-agar contact method. The most effective EO (i.e. Lavandula angustifolia ) whose volatile components provided the sufficient microbicidal properties was chosen for detailed study of chemical composition.
Experimental Study of Aerosol Penetration Efficiency through Denuder
Ondráčková, Lucie ; Ždímal, Vladimír ; Schwarz, Jaroslav ; Smolík, Jiří ; Putaud, J.P.
This article deals with experimental study of aerosol penetration efficiency through denuder.
The study of influence of atmospheric pollutants on the determination of nitrous acid with the preconcentration in the cylindrical wet diffusion denuder
Motyka, Kamil ; Večeřa, Zbyněk ; Mikuška, Pavel
The effect of pollutants which commonly occur in polluted air on the chemiluminescent determination of nitrous acid with preconcentration in cylindrical wet diffusion denuder was investigated.
Identification of volatile contaminants in air and atmospheric aerosol in agricultural enviroment
Hrdlička, Jan ; Večeřa, Zbyněk ; Mikuška, Pavel ; Dočekal, Bohumil ; Ciganek, M.
We present sampling and analysis of volatile and semi-volatile organic polutants using a cylindrical wet effluent diffusion denuder and atmospheric aerosols on filters in agricultural enviroment
Continuous determination of trace concentrations of ammonia in air
Hrdlička, Jan ; Večeřa, Zbyněk ; Mikuška, Pavel ; Opekar, F.
The determination of ammonia by means of the contactless conductivity detector is presented. For preconcentration of atmospheric amonia, a cylindrical wet effluent diffusion denuder was used.
Chemiluminescence determination of formaldehyde in air
Motyka, Kamil ; Mikuška, Pavel ; Večeřa, Zbyněk ; Hrdlička, Jan
A new method for continuous determination of formaldehyde in air based on preconcentration of formaldehyde in the cylindrical wet effluent diffusion denuder and subsequent chemiluminescence detection of formaldehyde in the denuder concentrate is presented.

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