National Repository of Grey Literature 35 records found  previous11 - 20nextend  jump to record: Search took 0.01 seconds. 
Identification of Bounds between Qualitative Parameters of Aerosols and Their Place of Occurence
Tydlitát, Vratislav ; Pekárek, Vladimír ; Šyc, Michal ; Schwarz, Jaroslav ; Karban, Jindřich
Results of measurements of aerosols obtained by 24hour taking in two localities in Prague during the year 2004 and in three localities during the year 2005 are presented.
Identification of Relations between Parameters of the Aerosol and Location of his Occurence
Tydlitát, Vratislav ; Pekárek, Vladimír ; Šyc, Michal
Analysis AAS of aerosols taken on three places in Prague, fractions PM10 and PM2,5 is presented. As, Cd, Cr, Cu, Mn, Ni, Pb, Al, Fe, Zn are determined. By the method EDX are determined relative content of 37 elements. Two analysis of samples of powders catured on ventilation filters in Prague 5 and Prague 6 are presented (inorgnic anionts, NH4+, Ca, Mg, Na, K,SiO2 are determined).
Dehalogenation of Polychlorinated Biphenyls
Bureš, M. ; Pekárek, Vladimír
This work deals with the determination of the thermodynamic stability of di- to nona-chlorinated biphenyls during the dehalogenation process of these compounds in the gas phase by steam in presence of solid copper. The aim of this study is a preliminary calculation of chemical equilibrium in this dehalogenation process, which can be compared with the measured kinetics data, obtained during simulation of the technologic process. The work is connected with our previous studies, carried out with dehalogenation of polychlorinated benzenes and polychlorinated phenols.
Case Study of Mercury Dispersion from Point Source
Brechler, J. ; Pekárek, Vladimír ; Tydlitát, Vratislav ; Janota, J.
On measured concentrations of gazeous Hg from point source point source the ATEM model was applied (Gaussian dispersion model). Space distribution of Hg for 1.Real metorological data at 25.3.2005 and for 2.Lower flow velocity are presented in figures.
Calculation of the Conformation and Thermochemical Quantities of Biphenyl and Chlorinated Biphenyls
Bureš, M. ; Pekárek, Vladimír
Thermochemical quantities of dihedral angles,enthalpy of formation and entropy of biphenyl and 209 isomers of chlorinated biphenyls in ideal gas state at 298 K and heat capacities have been calculated. Dihedral angles were discussed from the point of view of toxic properties of the studied compounds.
Technology of Catalytic Dehalogenation of POPs
Pekárek, Vladimír ; Ocelka, T. ; Grabic, R.
The present work deals with the results of the basic and applied research of mechanisms of formation and detoxification of dioxins and chemically similar compounds (ödioxin-like compounds), especially PCDF, PCB, OCP and others. This work is concerned with application consequences of the results of laboratory and pilot plant tests. The application of immediate concern is the destruction of POP compounds in the fly ash and other materials contaminated by POPs.
Comparison of Pentachlorophenol Experimental Dechloration with Thermodynamical Calculations by Municipal Incineration Waste Fly Ash
Vlková, Leona ; Pekárek, Vladimír ; Bureš, M.
The aim of this study is the comparison of dechlorination experiments of chlorinated phenols by the fly ash from municipal waste incinerators with thermodynamical calculations. Discussed are: isomer stability of chlorinated phenols for the given level of chlorination, isomerization, chlorination and sythetic reactions in the course of dechlorination reactions and the proposed principle ruling the dechlorination process.
Measurement of Persistent Organic Pollutants and Inorganic toxic Substances in Flue Gases from Crematory Furnace
Pekárek, Vladimír ; Tydlitát, Vratislav
Literature data about content of PCDD/Fs in flue gases from crematories,two day measurements of pollutants from one crematory furnace are described. Found concentrations of particulate matter and inorganic gases (SO2, NOx, CO, VOC, HCl, HF), concentrations of toxic metals and of PCBs, PAHs and PCDD/Fs are presented.

National Repository of Grey Literature : 35 records found   previous11 - 20nextend  jump to record:
See also: similar author names
1 PEKÁREK, Vlastimil
2 Pekárek, Vojtěch
1 Pekárek, Václav
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