|
|
Organic compounds in PM1 aerosol in the Central Bohemian Region in the Czech Republic
Křůmal, Kamil ; Mikuška, Pavel ; Coufalík, Pavel ; Večeřa, Zbyněk
Contribution summarizes the concentrations of monosaccharide anhydrides, resin acids, methoxyphenols, monosaccharides, disaccharides, sugar alcohols, alkanes, hopanes, steranes and polyaromatic hydrocarbons in PM1 aerosols in small town Celakovice in winter. According to concentrations of organic markers, the identification of emission sources in Celakovice is discussed.
|
|
| |
|
|
Aerosol Chemical Composition Studied by the Aerosol Mass Spectrometry – Identification of Aerosol Emerging during New Year´s Celebration
Kubelová, Lucie ; Vodička, Petr ; Schwarz, Jaroslav ; Ždímal, Vladimír
This study focused on finding of a marker of presence of aerosol originating during fireworks using aerosol mass spectrometer c-ToF-AMS. During the 48-hour campaign, we observed 4 episodes characterized by increased mass concentration of aerosol. Nonetheless, the main focus was placed on the episode right after the New Year's celebration.The AMS spectrometer enabled to identify fragments originating from fireworks. We found that presence of fireworks aerosol particles leads to a significant increase of the ratio m/z 39 and total organic mass. Since the increase in the fragment m/z 39 is usually connected with an increase in organic matter (i.e. with their relatively small mutual ratio), it is possible to consider the increased value of such ratio as a marker of presence of aerosol pariticles originating from firewords.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22015022514110 - PDF
|
|
| |
|
| |
|
|
Changes in Composition of Submicron Particular Matter of Atmospheric Aerosol During 2013 New Year´s Celebration
Kubelová, Lucie ; Vodička, Petr ; Schwarz, Jaroslav
In this work we investigated rapid changes in chemical composition of PM1 fraction during the celebrations of New Year 2013. The measurements were carried out at the urban background site Prague-Suchdol. The compact Time-of-Flight Aerosol Mass Spectrometer (c-ToF-AMS, Aerodyne), Drewnick et al. (2005), was used to analyze highly time-resolved samples of non-refractory aerosol components. We focused on four episodes with significantly elevated total aerosol mass concentration. We assume that the increased concentrations are due to: smoke plume from wood burning in Episode 1, fireworks in Episode 2, arrival of another air mass in Episode 3, and an uncategorized source of poly-aromatic hydrocarbons in Episode 4. The highest attention was given to the time interval between 00:20 and 2:20 a.m. on the New Year (marked in Figure 1 as Episode 2) as the aerosol composition was significantly affected by the occurring annual celebrations. In this period, the most significant increase in mass concentration was observed by sulfate, chlorides, and potassium (involved in the mass spectra for fragment 39). At the same time, nitrate and ammonium were unaffected. Those trends were compared to other measurements with c-ToF-AMS during annual celebrations, Drewnick et al.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013101814584 - PDF
|
|
| |
|
| |
|
| |
|
| |
guest ::
