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Multiyear levels of PCDD/Fs, dl-PCBs and PAHs in background air in central Europe and implications for deposition
Masaryk University, RECETOX, Brno, Czech Republic.
Örebro University, School of Science and Technology. (MTM Research Centre)ORCID iD: 0000-0003-1496-9245
Masaryk University, RECETOX, Brno, Czech Republic.
Masaryk University, RECETOX, Brno, Czech Republic.
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2020 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 240, article id UNSP 124852Article in journal (Refereed) Published
Abstract [en]

This study presents four years ambient monitoring data of seventeen 2,3,7,8-chlorine substituted poly-chlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs), twelve dioxin-like poly-chlorinated 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. Sigma PAHs ranged from 0.20 ng m(-3) to 134 ng(-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 Sigma PCDD/Fs was observed. On the other hand, the concentrations of Sigma dl-PCBs and Sigma PAHs were decreasing, with halving times of 5.7 and 2.7 years, respectively. We estimated that 422 pg m(-2) year pg m(-2) year 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.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 240, article id UNSP 124852
Keywords [en]
Persistent organic pollutants, Seasonal variations, Gas-particle partitioning, Multi-year variations, Atmospheric deposition
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-78512DOI: 10.1016/j.chemosphere.2019.124852ISI: 000497600800001PubMedID: 31542585Scopus ID: 2-s2.0-85072275182OAI: oai:DiVA.org:oru-78512DiVA, id: diva2:1376870
Note

Funding Agencies:

RECETOX - Ministry of Education, Youth and Sports of the Czech Republic  LM2015051

ACTRIS - Ministry of Education, Youth and Sports of the Czech Republic  LM2015037

European Structural and Investment Funds  CZ.02.1.01/0.0/0.0/16_013/0001761 CZ.02.1.01/0.0/0.0/16_013/0001315

Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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