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  Multiyear levels of PCDD/Fs, dl-PCBs and PAHs in background air in central Europe and implications for deposition

Degrendele, C., Fiedler, H., Kočan, A., Kukučka, P., Přibylová, P., Prokeš, R., et al. (2020). Multiyear levels of PCDD/Fs, dl-PCBs and PAHs in background air in central Europe and implications for deposition. Chemosphere, 240: 124852. doi:10.1016/j.chemosphere.2019.124852.

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 Creators:
Degrendele, Celine, Author
Fiedler, Heidelore, Author
Kočan, Anton, Author
Kukučka, Petr, Author
Přibylová, Petra, Author
Prokeš, Roman, Author
Klánová, Jana, Author
Lammel, Gerhard1, Author           
Affiliations:
1Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 Abstract: 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.

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 Dates: 2020
 Publication Status: Published online
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Title: Chemosphere
  Other : Chemosphere
Source Genre: Journal
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Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 240 Sequence Number: 124852 Start / End Page: - Identifier: ISSN: 0045-6535
CoNE: https://pure.mpg.de/cone/journals/resource/974392605047