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@article{1494023,
author = {Shahpoury, Pourya and Kitanovski, Zoran and Lammel, Gerhard},
article_location = {Göttingen, Germany},
article_number = {18},
doi = {http://dx.doi.org/10.5194/acp-18-13495-2018},
keywords = {CHROMATOGRAPHY-MASS-SPECTROMETRY; ATMOSPHERIC PARTICULATE MATTER; FREE-ENERGY RELATIONSHIPS; BIOMASS-BURNING AEROSOL; ORGANIC-COMPOUNDS; BROWN CARBON; AMBIENT AIR; NITRO-PAH; POLYCHLORINATED-BIPHENYLS; CHEMICAL-IONIZATION},
language = {eng},
issn = {1680-7316},
journal = {Atmospheric Chemistry and Physics},
title = {Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic},
url = {https://www.atmos-chem-phys.net/18/13495/2018/},
volume = {18},
year = {2018}
}
TY - JOUR
ID - 1494023
AU - Shahpoury, Pourya - Kitanovski, Zoran - Lammel, Gerhard
PY - 2018
TI - Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic
JF - Atmospheric Chemistry and Physics
VL - 18
IS - 18
SP - 13495-13510
EP - 13495-13510
PB - European Geosciences Union
SN - 16807316
KW - CHROMATOGRAPHY-MASS-SPECTROMETRY
KW - ATMOSPHERIC PARTICULATE MATTER
KW - FREE-ENERGY RELATIONSHIPS
KW - BIOMASS-BURNING AEROSOL
KW - ORGANIC-COMPOUNDS
KW - BROWN CARBON
KW - AMBIENT AIR
KW - NITRO-PAH
KW - POLYCHLORINATED-BIPHENYLS
KW - CHEMICAL-IONIZATION
UR - https://www.atmos-chem-phys.net/18/13495/2018/
L2 - https://www.atmos-chem-phys.net/18/13495/2018/
N2 - Nitrated and oxygenated polycyclic aromatic hydrocarbons (N/OPAHs) are emitted in combustion processes and formed in polluted air. Their environmental cycling through wet deposition has hardly been studied. Fresh snow samples at urban and rural sites in central Europe, as well as surface snow from a remote site in Svalbard, were analysed for 17 NPAHs, 8 OPAHs, and 11 nitrated mono-aromatic hydrocarbons (NMAHs), of which most N/OPAHs as well as nitrocatechols, nitrosalicylic acids, and 4-nitroguaiacol are studied for the first time in precipitation. In order to better understand the scavenging mechanisms, the particulate mass fractions (theta) at 273 K were predicted using a multi-phase gasparticle partitioning model based on polyparameter linear free energy relationships. Sigma NPAH concentrations were 1.217.6 and 8.8-19.1 ng L-1 at urban and rural sites, whereas EOPAHs were 79.8-955.2 and 343.3-1757.4 ng L-1 at these sites, respectively. 9,10-anthraquinone was predominant in snow aqueous and particulate phases. NPAHs were only found in the particulate phase with 9-nitroanthracene being predominant followed by 2-nitrofluoranthene. Among NMAHs, 4-nitrophenol showed the highest abundance in both phases. The levels found for nitrophenols were in the same range or lower than those reported in the 1980s and 1990s. The lowest levels of Sigma N/OPAHs and Sigma NMAHs were found at the remote site (3.5 and 390.5 ng L-1, respectively). N/OPAHs preferentially partitioned in snow particulate phase in accordance with predicted theta, whereas NMAHs were predominant in the aqueous phase, regardless of theta. It is concluded that the phase distribution of non-polar N/OPAHs in snow is determined by their gas-particle partitioning prior to snow scavenging, whereas that for polar particulate phase substances, i.e. NMAHs, is determined by an interplay between gas-particle partitioning in the aerosol and dissolution during in- or below-cloud scavenging.
ER -
SHAHPOURY, Pourya, Zoran KITANOVSKI and Gerhard LAMMEL. Snow scavenging and phase partitioning of nitrated and oxygenated aromatic hydrocarbons in polluted and remote environments in central Europe and the European Arctic. \textit{Atmospheric Chemistry and Physics}. Göttingen, Germany: European Geosciences Union, 2018, vol.~18, No~18, p.~13495-13510. ISSN~1680-7316. Available from: https://dx.doi.org/10.5194/acp-18-13495-2018.
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