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Vazquez-Pufleau M. Venturi pump-critical orifice as an online and robust nanoparticle dilution probe for in situ powder stream characterization. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Degrendele C, Kanduč T, Kocman D, Lammel G, Cambelová A, Dos Santos SG, Horvat M, Kukučka P, Holubová Šmejkalová A, Mikeš O, Nuñez-Corcuera B, Přibylová P, Prokeš R, Saňka O, Maggos T, Sarigiannis D, Klánová J. NPAHs and OPAHs in the atmosphere of two central European cities: Seasonality, urban-to-background gradients, cancer risks and gas-to-particle partitioning. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148528. [PMID: 34328964 PMCID: PMC8434474 DOI: 10.1016/j.scitotenv.2021.148528] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/28/2021] [Accepted: 06/14/2021] [Indexed: 05/24/2023]
Abstract
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.
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Affiliation(s)
| | - Tjaša Kanduč
- Department of Environmental Sciences, Jožef Stefan Institute, Slovenia
| | - David Kocman
- Department of Environmental Sciences, Jožef Stefan Institute, Slovenia
| | | | | | - Saul Garcia Dos Santos
- Área de Contaminación Atmosférica, Centro Nacional de Sanidad Ambiental Instituto de Salud Carlos III, Spain
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, Slovenia
| | - Petr Kukučka
- RECETOX Centre, Masaryk University, Czech Republic
| | | | - Ondřej Mikeš
- RECETOX Centre, Masaryk University, Czech Republic
| | - Beatriz Nuñez-Corcuera
- Área de Contaminación Atmosférica, Centro Nacional de Sanidad Ambiental Instituto de Salud Carlos III, Spain
| | | | - Roman Prokeš
- RECETOX Centre, Masaryk University, Czech Republic
| | - Ondřej Saňka
- RECETOX Centre, Masaryk University, Czech Republic
| | - Thomas Maggos
- Atmospheric Chemistry & Innovative Technologies Laboratory, NCSR "Demokritos", Greece
| | - Denis Sarigiannis
- Environmental Engineering Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece; HERACLES Research Centre on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Thessaloniki, Greece; University School of Advanced Study, Pavia, Italy
| | - Jana Klánová
- RECETOX Centre, Masaryk University, Czech Republic
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