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Pesticides in the atmosphere: a comparison of gas-particle partitioning and particle size distribution of legacy and current-use pesticides
RECETOX (Research Centre for Toxic Compounds in the Environment), Faculty of Science, Masaryk University, Brno, Czech Republic; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany.
RECETOX (Research Centre for Toxic Compounds in the Environment), Faculty of Science, Masaryk University, Brno, Czech Republic.
RECETOX (Research Centre for Toxic Compounds in the Environment), Faculty of Science, Masaryk University, Brno, Czech Republic.
RECETOX (Research Centre for Toxic Compounds in the Environment), Faculty of Science, Masaryk University, Brno, Czech Republic.
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2016 (English)In: Atmospheric Chemistry And Physics, ISSN 1680-7316, E-ISSN 1680-7324, Vol. 16, no 3, p. 1531-1544Article in journal (Refereed) Published
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Abstract [en]

This study presents a comparison of seasonal variation, gas-particle partitioning, and particle-phase size distribution of organochlorine pesticides (OCPs) and current-use pesticides (CUPs) in air. Two years (2012/2013) of weekly air samples were collected at a background site in the Czech Republic using a high-volume air sampler. To study the particle-phase size distribution, air samples were also collected at an urban and rural site in the area of Brno, Czech Republic, using a cascade impactor separating atmospheric particulates according to six size fractions. Major differences were found in the atmospheric distribution of OCPs and CUPs. The atmospheric concentrations of CUPs were driven by agricultural activities while secondary sources such as volatilization from surfaces governed the atmospheric concentrations of OCPs. Moreover, clear differences were observed in gas-particle partitioning; CUP partitioning was influenced by adsorption onto mineral surfaces while OCPs were mainly partitioning to aerosols through absorption. A predictive method for estimating the gas-particle partitioning has been derived and is proposed for polar and non-polar pesticides. Finally, while OCPs and the majority of CUPs were largely found on fine particles, four CUPs (carbendazim, isoproturon, prochloraz, and terbuthylazine) had higher concentrations on coarse particles (> 3.0 mu m), which may be related to the pesticide application technique. This finding is particularly important and should be further investigated given that large particles result in lower risks from inhalation (re-gardless the toxicity of the pesticide) and lower potential for long-range atmospheric transport.

Place, publisher, year, edition, pages
Copernicus Publications , 2016. Vol. 16, no 3, p. 1531-1544
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49763DOI: 10.5194/acp-16-1531-2016ISI: 000371284100021Scopus ID: 2-s2.0-84958212729OAI: oai:DiVA.org:oru-49763DiVA, id: diva2:918914
Note

Funding Agencies:

Czech Ministry of Education LO1214  LM2011028

EU FP7 project CSI: ENVIRONMENT PITN-GA-2010-264329

EU FP7 project CSI: ArcRisk 226534

Project "Employment of Best Young Scientists for International Cooperation Empowerment" CZ.1.07/2.3.00/30.0037

European Social Fund and the state budget of the Czech Republic

Available from: 2016-04-12 Created: 2016-04-12 Last updated: 2018-09-04Bibliographically approved

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