Three years of atmospheric concentrations of nitrated and oxygenated polycyclic aromatic hydrocarbons and oxygen heterocycles at a central European background site.

Autor: Nežiková B; RECETOX Centre, Masaryk University, Brno, Czech Republic., Degrendele C; RECETOX Centre, Masaryk University, Brno, Czech Republic., Bandowe BAM; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany., Holubová Šmejkalová A; Czech Hydrometeorological Institute, Košetice Observatory, Košetice, Czech Republic., Kukučka P; RECETOX Centre, Masaryk University, Brno, Czech Republic., Martiník J; RECETOX Centre, Masaryk University, Brno, Czech Republic., Mayer L; RECETOX Centre, Masaryk University, Brno, Czech Republic., Prokeš R; RECETOX Centre, Masaryk University, Brno, Czech Republic., Přibylová P; RECETOX Centre, Masaryk University, Brno, Czech Republic., Klánová J; RECETOX Centre, Masaryk University, Brno, Czech Republic., Lammel G; RECETOX Centre, Masaryk University, Brno, Czech Republic; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany. Electronic address: gerhard.lammel@recetox.muni.cz.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2021 Apr; Vol. 269, pp. 128738. Date of Electronic Publication: 2020 Oct 26.
DOI: 10.1016/j.chemosphere.2020.128738
Abstrakt: Nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs, OPAHs) are abundant in the atmosphere and contribute significantly to the health risk associated with inhalation of polluted air. Despite the health hazard they pose, NPAHs and OPAHs were rarely included in monitoring. The aim of this study is to provide the first multi-year temporal trends of the concentrations, composition pattern and fate of NPAHs and OPAHs in air from a site representative of background air quality conditions in central Europe. Samples were collected every second week at a rural background site in the Czech Republic during 2015-2017. Concentrations ranged from 1.3 to 160 pg m -3 for Σ 17 NPAHs, from 32 to 2600 pg m -3 for Σ 10 OPAHs and from 5.1 to 4300 pg m -3 for Σ 2 O-heterocycles. The average particulate mass fraction (θ) ranged from 0.01 ± 0.02 (2-nitronaphthalene) to 0.83 ± 0.22 (1-nitropyrene) for individual NPAHs and from <0.01 ± 0.01 (dibenzofuran) to 0.96 ± 0.08 (6H-benzo (c,d)pyren-6-one) for individual OPAHs and O-heterocycles. The multiyear variations showed downward trends for a number of targeted compounds. This suggests that on-going emission reductions of PAHs are effective also for co-emitted NPAHs and OPAHs.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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