National Repository of Grey Literature 126 records found  beginprevious119 - 126  jump to record: Search took 0.01 seconds. 
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.
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.
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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