Five primary sources of organic aerosols in the urban atmosphere of Belgrade (Serbia)
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In: Science of the Total Environment, Vol. 571, 15.11.2016, p. 1441-1453.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Five primary sources of organic aerosols in the urban atmosphere of Belgrade (Serbia)
AU - Zangrando, Roberta
AU - Barbaro, Elena
AU - Kirchgeorg, Torben
AU - Vecchiato, Marco
AU - Scalabrin, Elisa
AU - Radaelli, Marta
AU - Đorđević, Dragana
AU - Barbante, Carlo
AU - Gambaro, Andrea
PY - 2016/11/15
Y1 - 2016/11/15
N2 - Biomass burning and primary biological aerosol particles (PBAPs) represent important primary sources of organic compounds in the atmosphere. These particles and compounds are able to affect climate and human health. In the present work, using HPLC-orbitrapMS, we determined the atmospheric concentrations of molecular markers such as anhydrosugars and phenolic compounds that are specific for biomass burning, as well as the concentrations of sugars, alcohol sugars and D- and L-amino acids (D-AAs and L-AAs) for studying PBAPs in Belgrade (Serbia) aerosols collected in September–December 2008. In these samples, high levels of all these biomarkers were observed in October. Relative percentages of vanillic (V), syringic compounds (S) and p-coumaric acid (PA), as well as levoglucosan/mannosan (L/M) ratios, helped us discriminate between open fire events and wood combustion for domestic heating during the winter. L-AAs and D-AAs (1% of the total) were observed in Belgrade aerosols mainly in September–October. During open fire events, mean D-AA/L-AA (D/L) ratio values of aspartic acid, threonine, phenylalanine, alanine were significantly higher than mean D/L values of samples unaffected by open fire. High levels of AAs were observed for open biomass burning events. Thanks to four different statistical approaches, we demonstrated that Belgrade aerosols are affected by five sources: a natural source, a source related to fungi spores and degraded material and three other sources linked to biomass burning: biomass combustion in open fields, the combustion of grass and agricultural waste and the combustion of biomass in stoves and industrial plants. The approach employed in this work, involving the determination of specific organic tracers and statistical analysis, proved useful to discriminate among different types of biomass burning events.
AB - Biomass burning and primary biological aerosol particles (PBAPs) represent important primary sources of organic compounds in the atmosphere. These particles and compounds are able to affect climate and human health. In the present work, using HPLC-orbitrapMS, we determined the atmospheric concentrations of molecular markers such as anhydrosugars and phenolic compounds that are specific for biomass burning, as well as the concentrations of sugars, alcohol sugars and D- and L-amino acids (D-AAs and L-AAs) for studying PBAPs in Belgrade (Serbia) aerosols collected in September–December 2008. In these samples, high levels of all these biomarkers were observed in October. Relative percentages of vanillic (V), syringic compounds (S) and p-coumaric acid (PA), as well as levoglucosan/mannosan (L/M) ratios, helped us discriminate between open fire events and wood combustion for domestic heating during the winter. L-AAs and D-AAs (1% of the total) were observed in Belgrade aerosols mainly in September–October. During open fire events, mean D-AA/L-AA (D/L) ratio values of aspartic acid, threonine, phenylalanine, alanine were significantly higher than mean D/L values of samples unaffected by open fire. High levels of AAs were observed for open biomass burning events. Thanks to four different statistical approaches, we demonstrated that Belgrade aerosols are affected by five sources: a natural source, a source related to fungi spores and degraded material and three other sources linked to biomass burning: biomass combustion in open fields, the combustion of grass and agricultural waste and the combustion of biomass in stoves and industrial plants. The approach employed in this work, involving the determination of specific organic tracers and statistical analysis, proved useful to discriminate among different types of biomass burning events.
KW - Aerosol primary sources
KW - Biomass burning
KW - PBAPs
KW - PMF
KW - Urban aerosols
KW - Chemistry
UR - http://www.scopus.com/inward/record.url?scp=84989913861&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2016.06.188
DO - 10.1016/j.scitotenv.2016.06.188
M3 - Journal articles
C2 - 27450960
AN - SCOPUS:84989913861
VL - 571
SP - 1441
EP - 1453
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -