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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

<a href="/en/project/LM2023030" target="_blank" >LM2023030: ACTRIS – participation of the Czech Republic</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Article name in the collection

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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Number of pages

1

Pages from-to

52-52

Publisher name

Belgrade: Serbian Chemical Society

Place of publication

Belgrade

Event location

Belgrade

Event date

Aug 7, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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