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Multiyear levels of...
Multiyear levels of PCDD/Fs, dl-PCBs and PAHs in background air in central Europe and implications for deposition
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- Degrendele, Celine (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Fiedler, Heidelore, Dr. 1953- (författare)
- Örebro universitet,Institutionen för naturvetenskap och teknik,MTM Research Centre
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- Kocan, Anton (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Kukucka, Petr (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Pribylova, Petra (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Prokes, Roman (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Klanova, Jana (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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- Lammel, Gerhard (författare)
- Masaryk University, RECETOX, Brno, Czech Republic
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- Engelska.
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Ingår i: Chemosphere. - : Elsevier. - 0045-6535 .- 1879-1298. ; 240
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Persistent organic pollutants
- Seasonal variations
- Gas-particle partitioning
- Multi-year variations
- Atmospheric deposition
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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