4 Material und Umwelt
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Transformation of carbendazim, diuron, octylisothiazolinone and terbutryn was investigated in two paints containing either white titanium dioxide or a red iron oxide pigment.
Test specimens of these coatings on glass were exposed to water contact and UVA-radiation under laboratory conditions. Panels of birch plywood were coated and exposed to natural weather conditions in a field experiment. Concentrations of biocides and transformation products were analysed in leachates from laboratory tests, runoff samples and remaining coatings. Water contact, UVA radiation as well as pigments in the paints affected the pattern and amount of transformation products.