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Aerosol composition and microstructure in the smoky atmosphere of Moscow during the August 2010 extreme wildfires
- Source :
- Izvestiya, Atmospheric and Oceanic Physics. 53:49-57
- Publication Year :
- 2017
- Publisher :
- Pleiades Publishing Ltd, 2017.
-
Abstract
- This is a comprehensive study of the physicochemical characterization of multicomponent aerosols in the smoky atmosphere of Moscow during the extreme wildfires of August 2010 and against the background atmosphere of August 2011. Thermal–optical analysis, liquid and ion chromatography, IR spectroscopy, and electron microscopy were used to determine the organic content (OC) and elemental content (EC) of carbon, organic/inorganic and ionic compounds, and biomass burning markers (anhydrosaccharides and the potassium ion) and study the morphology and elemental composition of individual particles. It has been shown that the fires are characterized by an increased OC/EC ratio and high concentrations of ammonium, potassium, and sulfate ions in correlation with an increased content of levoglucosan as a marker of biomass burning. The organic compounds containing carbonyl groups point to the process of photochemical aging and the formation of secondary organic aerosols in the urban atmosphere when aerosols are emitted from forest fires. A cluster analysis of individual particles has indicated that when the smokiest atmosphere is characterized by prevailing soot/tar ball particles, which are smoke-emission micromarkers.
- Subjects :
- Smoke
Atmospheric Science
010504 meteorology & atmospheric sciences
Meteorology
Potassium
Levoglucosan
Ion chromatography
Infrared spectroscopy
chemistry.chemical_element
010501 environmental sciences
Oceanography
medicine.disease_cause
complex mixtures
01 natural sciences
Soot
chemistry.chemical_compound
chemistry
Environmental chemistry
medicine
Ammonium
Sulfate
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 1555628X and 00014338
- Volume :
- 53
- Database :
- OpenAIRE
- Journal :
- Izvestiya, Atmospheric and Oceanic Physics
- Accession number :
- edsair.doi...........c1259bc1db5a235c712ecb1f80ec9ae7