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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
TRACERS OF ANTHROPOGENIC AND BIOGENIC SOURCES OF ORGANIC AEROSOL IN THE PM1 FRACTION AT THE KOŠETICE BACKGROUND STATION
 Vodička, Petr ; Kawamura, K. ; Deshmukh, D.K. ; Pokorná, Petra ; Schwarz, Jaroslav ; Ždímal, Vladimír
In this study, we have examined in detail the seasonal changes in the concentration of sugars, dicarboxylic acids and their oxidation precursors in fine aerosol at a rural Central European background site. The aim of the study was to identify typical tracers for different sources of organic aerosol and to determine their contributions to organic PM1.We found a clear difference between winter and summer PM1 aerosol composition at the molecular level. Subsequently, we identified two biogenic factors (dominant in summer), two anthropogenic factors (major contribution in winter) and one background factor.\nMore details could be found in Vodička et. al (2023).
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Determination of dicarboxylic acids in air by aerosol sampler
 Čapka, Lukáš ; Mikuška, Pavel
Dicarboxylic acids (DCAs) are important components of water soluble aerosol compounds. Aerosol particles are quantitatively collected using a continous aerosol sampler, CGU-ACTJU, into deionized water. The ACTJU effluent is permanently sucked out from the sampler and on-line analysed for DCAs content by means of ion chromatography.
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Determination of dicarboxylic acids in atmospheric aerosols using ion chromatography with on-line connected preconcentration unit
 Čapka, Lukáš ; Mikuška, Pavel ; Večeřa, Zbyněk
A method for the fast and sensitive detection of dicarboxylic acids in atmospheric\naerosols was optimized. The method is based on the online sampling and subsequent\nanalysis with ion chromatography. The system was applied to the determination of\nDCAs in urban aerosols in Brno. The method was verified using a laboratory generated\nstandard aerosol of DCAs. A sampling of aerosol particles on parallel filter was used\nas a reference method.
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