10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Assessment of Residential Wood Combustion Influences on Air Quality in a Suburban Area From Eastern Europe
LUMINITA MARMUREANU, Cristina Marin, Alexandru Dandocsi, Simona Andrei, National Institute of R&D for Optoelecttronics
Abstract Number: 1159 Working Group: Source Apportionment
Abstract Atmospheric aerosols represents an important component of the Earth System. The aerosol various effects on climate still remain nowadays weakly understood. Biomass Burning aerosol represent one of the most abundant aerosol during cold season especially in the regions with winters dominated by negative values. Biomass burning (BB) aerosols plays a major role in different aspects of weather, climate and atmospheric chemistry. Biomass burning has an important contribution to the total concentration of the Black Carbon (BC) and to the organic aerosol present into the atmosphere. The organic aerosols represent one of the most important fractions of the total aerosol. Until now important researches focused on the assessment of the BB aerosol fraction of the total PM were made across the Europe underlining their impact, especially during winter. Even so, the Eastern Europe represents one of the important area less covered by research in the recent years. The influence on fine aerosol levels produced by residential heating in a periurban environment (Romania) was investigated during winter period. High-time resolved data on light-absorbing aerosols using seven-wavelength Aethalometer and submicronic organics derived from ACSM were combined during dedicated sampling winter campaigns carried on in cold seasons starting from 2015 to 2017. The measurements were made in a periurban area near Bucharest highly influenced by residential heating during the cold season. The main sources of heating in this area are represented by pellets, wood and natural gas. High impact of residential heating can be noticed, the BC resultant from biomass burning having an influence that frequently overpass 45% from total equivalent BC, and for significant periods of time representing the dominant fraction. The results were correlated with markers for fresh BB derived from ACSM (aerosol chemical speciation monitor) data (m/z 60, 73) specific to ”levoglucosan like" anhydrosugar produced by cellulose pyrolysis. The positive matrix factorization was applied to organic spectra, the BBOA (biomass burning organic aerosol) representing an important fraction of winter time period. The BC and submicron organic particle measurements conducted for almost 9 winter months shows a variation of chemical composition of submicron non-refractory aerosols interlinked with specific meteorological parameters. Different diurnal patterns can be noticed for BC characteristic for fossil fuel different than BC resulted from wood burning. The diurnal pattern of Biomass Burning aerosol show maximum in the afternoon with and minimum during noon time, but also significant contribution during entire night time.