Current-use and organochlorine pesticides’ multi-annual trends in air in Central Europe: Primary and unidentified secondary sources

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F25%3AN0000062" target="_blank" >RIV/00020699:_____/25:N0000062 - isvavai.cz</a>

Výsledek na webu

<a href="https://egusphere.copernicus.org/preprints/2025/egusphere-2025-349/" target="_blank" >https://egusphere.copernicus.org/preprints/2025/egusphere-2025-349/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Current-use and organochlorine pesticides’ multi-annual trends in air in Central Europe: Primary and unidentified secondary sources

Popis výsledku v původním jazyce

The historical use of organochlorine (OCPs) and current-use pesticides (CUPs) has been contributing to the global cycling of these compounds in the atmosphere due to their persistence, semivolatility, and potential for long-range transport [1; 2]. Multi-annual observations of these compounds are important to assess the effectiveness of policy decisions the overall atmospheric pesticides load but also to identify their sources to the atmospheric environment. In this study, 48 CUPs and 30 OCPs were investigated in ambient air at a rural-agricultural site in the Czech Republic, with biweekly sampling over three and 10 years, respectively. For those, multi-annual trend analysis revealed decreasing atmospheric concentrations for several OCPs, which indicate diminishing reservoirs in environmental compartments especially soil over the years. For β- and γ-HCH, o,p’- and p,p’-DDE, o,p’-DDD, o,p’- and p,p’-DDT, α-chlordane, and mirex levelling off is observed, which points to recently enhanced secondary sources in the region or beyond i.e., reversal of the direction of air-surface exchange or recent mobilisation from soils, water bodies, or the cryosphere (Figure 1). CUP concentrations peaked during application seasons, with multi-year trends either insignificant or declining. For compounds like chlorpyrifos and fenpropimorph, declining trends aligned with regulatory bans, though their presence in the atmosphere was evident one-year post-ban, suggesting persistence.

Název v anglickém jazyce

Current-use and organochlorine pesticides’ multi-annual trends in air in Central Europe: Primary and unidentified secondary sources

Popis výsledku anglicky

The historical use of organochlorine (OCPs) and current-use pesticides (CUPs) has been contributing to the global cycling of these compounds in the atmosphere due to their persistence, semivolatility, and potential for long-range transport [1; 2]. Multi-annual observations of these compounds are important to assess the effectiveness of policy decisions the overall atmospheric pesticides load but also to identify their sources to the atmospheric environment. In this study, 48 CUPs and 30 OCPs were investigated in ambient air at a rural-agricultural site in the Czech Republic, with biweekly sampling over three and 10 years, respectively. For those, multi-annual trend analysis revealed decreasing atmospheric concentrations for several OCPs, which indicate diminishing reservoirs in environmental compartments especially soil over the years. For β- and γ-HCH, o,p’- and p,p’-DDE, o,p’-DDD, o,p’- and p,p’-DDT, α-chlordane, and mirex levelling off is observed, which points to recently enhanced secondary sources in the region or beyond i.e., reversal of the direction of air-surface exchange or recent mobilisation from soils, water bodies, or the cryosphere (Figure 1). CUP concentrations peaked during application seasons, with multi-year trends either insignificant or declining. For compounds like chlorpyrifos and fenpropimorph, declining trends aligned with regulatory bans, though their presence in the atmosphere was evident one-year post-ban, suggesting persistence.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/LM2023030" target="_blank" >LM2023030: ACTRIS – účast ČR</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

19th International Conference on Chemistry and the Environment

ISBN

978-86-7132-088-7

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

52-52

Název nakladatele

Belgrade: Serbian Chemical Society

Místo vydání

Belgrade

Místo konání akce

Belgrade

Datum konání akce

7. 8. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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