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Bulk atmospheric deposition of persistent organic pollutants and polycyclic aromatic hydrocarbons in Central Europe.


ABSTRACT: Polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) are ubiquitous and toxic contaminants. Their atmospheric deposition fluxes on the regional scale were quantified based on simultaneous sampling during 1 to 5 years at 1 to 6 background/rural sites in the Czech Republic and Austria. The samples were extracted and analysed by means of gas chromatography coupled to mass spectrometry. For all seasons and sites, total deposition fluxes for ?15PAHs ranged 23-1100 ng m-2 d-1, while those for ?6PCBs and ?12OCPs ranged 64-4400 and 410-7800 pg m-2 d-1, respectively. Fluoranthene and pyrene were the main contributors to the PAH deposition fluxes, accounting on average for 19% each, while deposition fluxes of PCBs and OCPs were dominated by PCB153 (26%) and ?-hexachlorobenzene (30%), respectively. The highest deposition flux of ?15PAHs was generally found in spring, while no seasonality was found for PCB deposition. For deposition fluxes for ?12OCPs, no clear spatial trend was found, confirming the perception of long-lived regional pollutants. Although most OCPs and PCBs hardly partition to the particulate phase in ambient air, on average, 42% of their deposition fluxes were found on filters, confirming the perception that particle deposition is more efficient than dry gaseous deposition. Due to methodological constraints, fluxes derived from bulk deposition samplers should be understood as lower estimates, in particular with regard to those substances which in ambient aerosols mostly partition to the particulate phase.

SUBMITTER: Nezikova B 

PROVIDER: S-EPMC6667414 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Bulk atmospheric deposition of persistent organic pollutants and polycyclic aromatic hydrocarbons in Central Europe.

Nežiková Barbora B   Degrendele Céline C   Čupr Pavel P   Hohenblum Philipp P   Moche Wolfgang W   Prokeš Roman R   Vaňková Lenka L   Kukučka Petr P   Martiník Jakub J   Audy Ondřej O   Přibylová Petra P   Holoubek Ivan I   Weiss Peter P   Klánová Jana J   Lammel Gerhard G  

Environmental science and pollution research international 20190614 23


Polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) are ubiquitous and toxic contaminants. Their atmospheric deposition fluxes on the regional scale were quantified based on simultaneous sampling during 1 to 5 years at 1 to 6 background/rural sites in the Czech Republic and Austria. The samples were extracted and analysed by means of gas chromatography coupled to mass spectrometry. For all seasons and sites, total deposition fluxes for Σ  ...[more]

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