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Spring Aerosol in Urban Atmosphere of Megacity: Analytical and Statistical Assessment for Source Impacts

Category: Aerosol and Atmospheric Chemistry

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DOI: 10.4209/aaqr.2019.08.0412
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To cite this article:
Popovicheva, O., Padoan, S., Schnelle- Kreis, J., Nguyen, D., Adam, T., Kistler, M., Steinkogler, T., Kasper-Giebl, A., Zimmermann, R. and Chubarova, N. (2020). Spring Aerosol in Urban Atmosphere of Megacity: Analytical and Statistical Assessment for Source Impacts. Aerosol Air Qual. Res., doi: 10.4209/aaqr.2019.08.0412.

O.B. Popovicheva 1, S. Padoan2,3, J. Schnelle- Kreis3, D.L. Nguyen3,5, T.W. Adam2,3, M. Kistler4, T. Steinkogler4, A. Kasper-Giebl4, R. Zimmermann3,5, N.E. Chubarova6

  • 1 Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
  • 2 Bundeswehr University München, Institute for Chemistry and Environmental Engineering, Neubiberg, 85577, Germany
  • 3 Comprehensive Molecular Analytics (CMA) and Joint Mass Spectrometry Center (JMSC), Helmholtz Zentrum München, D-85764 Oberschleißheim, Germany
  • 4 Institute of Chemical Technologies and Analytics, TU Wien, 1060 Vienna, Austria
  • 5 Chair of Analytical Chemistry and Joint Mass Spectrometry Centre (JMSC), University of Rostock, D-18051 Rostock, Germany
  • 6 Geographical Faculty, Lomonosov Moscow State University, Moscow, 119991, Russia

Highlights

  • Optical and analytical tools for identification of BB- affected and FF periods.
  • Attentive combination between analytical chemistry and statistics.
  • Aerosol composition explaining an impact of various emission sources.
  • Factors influencing the day-to-day variation in aerosol composition.

Abstract

In the complex situation of the plurality of emissions, an important research task remains in the Moscow megacity environment for assessment of the air quality and potential sources through aerosol composition analyses. Light absorption, PM10 mass concentration, aerosol composition, and meteorological parameters have been measured in the urban background of the Moscow megacity in spring 2017, in a period characterized by significant changes of air temperature, mass advection, and solar radiation. Organic and elemental carbon (OC, EC) as well as 76 organic compounds such as alkanes, polycyclic aromatic hydrocarbons (PAHs), oxidized PAHs, hopans, and anhydrosugars, polyols, primary and secondary saccharides, and HULIS as well as 13 ions, including K+ marker of biomass burning, are quantified for carbonaceous and inorganic aerosol composition. Correlation between Angstrom Absorption Exponent (AAE) and levoglucosan concentrations identify the relative contribution of agricultural fires and residential biomass burning (BB) around a city to urban aerosol composition. Combining the attentive analytical and statistical approaches, representative chemical compounds are developed to describe the highest quantity of variability, evaluated together with the highest analytical validity of chemical compounds. Principal component analyses (PCA) highlights the main factors from marker species relating to gasoline/diesel traffic, BB, biogenic activity, and secondary formation in the atmosphere. Identification of BB-affected periods discriminates the daily aerosol composition change with respect to air mass transportation and number of fires detected in the surrounding area of the Moscow megacity.

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