Multiyear levels of PCDD/Fs, dl-PCBs and PAHs in background air in central Europe and implications for deposition
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články
PubMed
31542585
DOI
10.1016/j.chemosphere.2019.124852
PII: S0045-6535(19)32091-0
Knihovny.cz E-zdroje
- Klíčová slova
- Atmospheric deposition, Gas-particle partitioning, Multi-year variations, Persistent organic pollutants, Seasonal variations,
- MeSH
- látky znečišťující vzduch analýza MeSH
- monitorování životního prostředí MeSH
- polychlorované bifenyly analýza MeSH
- polychlorované dibenzodioxiny analýza MeSH
- polychlorované dibenzofurany analýza MeSH
- polycyklické aromatické uhlovodíky analýza MeSH
- roční období MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- látky znečišťující vzduch MeSH
- polychlorované bifenyly MeSH
- polychlorované dibenzodioxiny MeSH
- polychlorované dibenzofurany MeSH
- polycyklické aromatické uhlovodíky MeSH
This study presents four years ambient monitoring data of seventeen 2,3,7,8-chlorine substituted polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs), twelve dioxin-like polychlorinated biphenyls (dl-PCBs) and sixteen polycyclic aromatic hydrocarbons (PAHs) designed by the US EPA at a background site in central Europe during 2011-2014. The concentrations expressed as toxic equivalents (TEQs) using the WHO2005-scheme for PCDD/Fs (0.2 fg m-3-61.1 fg m-3) were higher than for dl-PCBs (0.01 fg m-3-2.9 fg m-3), while the opposite was found in terms of mass concentrations. ΣPAHs ranged from 0.20 ng m-3 to 134 ng m-3. The mass concentration profile of PCDD/Fs, dl-PCBs and PAHs was similar throughout the four years. PCDD/Fs and PAHs concentrations were dominated by primary sources peaking in winter, while those of dl-PCBs were controlled by secondary sources characterized by a spring-summer peak. During 2011-2014, no significant decrease in the atmospheric levels of ΣPCDD/Fs was observed. On the other hand, the concentrations of Σdl-PCBs and ΣPAHs were decreasing, with halving times of 5.7 and 2.7 years, respectively. We estimated that 422 pg m-2 year-1-567 pg m-2 year-1 TEQ PCDD/Fs and 3.48 pg m-2 year-1-15.8 pg m-2 year-1 TEQ dl-PCBs were transferred from the air to the ground surfaces via dry particulate deposition during 2011-2014.
Masaryk University RECETOX Kamenice 5 625 00 Brno Czech Republic
Örebro University School of Science and Technology MTM Research Centre SE 701 82 Örebro Sweden
Citace poskytuje Crossref.org
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