2026-06-14T03:33:10Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/141622025-05-12T10:30:57Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19610

00925njm 22002777a 4500 dc Degrendele, Céline author Kanduč, Tjaša author Kocman, David author Lammel, Gerhard author Cambelová, Adriana author Garcia Dos Santos-Alves, Saul author Horvat, Milena author Kukučka, Petr author Holubová Šmejkalová, Adéla author Mikeš, Ondřej author Nuñez-Corcuera, Beatriz author Přibylová, Petra author Prokeš, Roman author Saňka, Ondřej author Maggos, Thomas author Sarigiannis, Denis author Klánová, Jana author 2021-06-25 Derivatives of polycyclic aromatic hydrocarbons (PAHs) such as nitrated- and oxygenated-PAHs (NPAHs and OPAHs) could be even more toxic and harmful for the environment and humans than PAHs. We assessed the spatial and seasonal variations of NPAHs and OPAHs atmospheric levels, their cancer risks and their gas-to-particle partitioning. To this end, about 250 samples of fine particulate matter (PM2.5) and 50 gaseous samples were collected in 2017 in central Europe in the cities of Brno and Ljubljana (two traffic and two urban background sites) as well as one rural site. The average particulate concentrations were ranging from below limit of quantification to 593 pg m-3 for Σ9NPAHs and from 1.64 to 4330 pg m-3 for Σ11OPAHs, with significantly higher concentrations in winter compared to summer. In winter, the particulate levels of NPAHs and OPAHs were higher at the traffic site compared to the urban background site in Brno while the opposite was found in Ljubljana. NPAHs and OPAHs particulate levels were influenced by the meteorological parameters and co-varied with several air pollutants. The significance of secondary formation on the occurrence of some NPAHs and OPAHs is indicated. In winter, 27-47% of samples collected at all sites were above the acceptable lifetime carcinogenic risk. The gas-particle partitioning of NPAHs and OPAHs was influenced by their physico-chemical properties, the season and the site-specific aerosol composition. Three NPAHs and five OPAHs had higher particulate mass fractions at the traffic site, suggesting they could be primarily emitted as particles from vehicle traffic and subsequently partitioning to the gas phase along air transport. This study underlines the importance of inclusion of the gas phase in addition to the particulate phase when assessing the atmospheric fate of polycyclic aromatic compounds and also when assessing the related health risk. Sci Total Environ. 2021;793:148528. 10.1016/j.scitotenv.2021.148528 1879-1026 Science of the Total Environment 34328964 http://hdl.handle.net/20.500.12105/14162 Atmosphere Cancer risk Fine particles Polycyclic aromatic hydrocarbons Spatial variations NPAHs and OPAHs in the atmosphere of two central European cities: Seasonality, urban-to-background gradients, cancer risks and gas-to-particle partitioning