Spatial, seasonal and vertical distributions of currently-used pesticides in the marine boundary layer of the North Sea

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Authors

MAI Carolin THEOBALD Norbert LAMMEL Gerhard HUEHNERFUSS Heinrich

Year of publication 2013
Type Article in Periodical
Magazine / Source Atmospheric Environment
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1016/j.atmosenv.2013.04.027
Field Water pollution and control
Keywords Atmosphere; Atmospheric deposition; Currently-used pesticides; North Sea; Herbicides
Description Pesticides are transported beyond source regions and reach coastal waters and shelf seas. 23 representatives of six chemical classes of currently-used pesticides (CUPs) were simultaneously quantified in the marine boundary layer and the surface seawater of the German Bight and the central North Sea in 2009 and 2010. Terbuthylazine, metolachlor, metazachlor, pendimethalin and trifluralin exhibited the highest concentrations, seasonally highly variable. Advection of contaminated air from land and subsequent atmospheric deposition was shown to contribute to surface seawater contamination significantly, in particular in regions beyond riverine input and during the main seasons of application in agriculture. Deposition was most significant for the seasonal and spatial distributions of pendimethalin and trifluralin. Atrazine and simazine levels in the air are lower than 1-2 decades ago
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