TY - JOUR A1 - Schoknecht, Ute A1 - Mathies, Helena A1 - Wegner, R. A1 - Uhlig, S A1 - Baldauf, H. A1 - Colson, B T1 - Leaching of biocides from organic coatings N2 - Biocide leaching was investigated for acrylate and vinyl acetate based coatings containing biocides either as liquid formulations or microcapsules. Laboratory and field tests indicate similar relations of results on carbendazim, diuron, terbutryn and OIT from different coatings in laboratory and field experiments. Emissions were higher in EN 16105 laboratory tests than from vertically installed test specimens exposed to weathering, and slower for microencapsulated biocides. Competing processes that cause losses of active substances can occur in both tests, but to a higher degree in field experiments. Emission curves related to runoff water were similar in repeated field experiments. Relative humidity, temperature and global radiation were identified as meteorological factors that affect leaching by complex interaction besides the amount of driving rain. KW - Leaching KW - Biozid KW - Beschichtung PY - 2016 SN - 1230-3321 IS - 4 SP - 3 EP - 9 AN - OPUS4-38909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schoknecht, Ute A1 - Mathies, Helena A1 - Wegner, R. A1 - Uhlig, S. A1 - Baldauf, H. A1 - Colson, B. T1 - Leaching of biocides from organic coatings N2 - Biocide leaching was investigated for acrylate and vinyl acetate based coatings containing biocides either as liquid formulations or microcapsules. Laboratory and field tests indicate similar relations of results on carbendazim, diuron, terbutryn and OIT from different coatings in laboratory and field experiments. Emissions were higher in EN 16105 laboratory tests than from vertically installed test specimens exposed to weathering, and slower for microencapsulated biocides. Competing processes that cause losses of active substances can occur in both tests, but to a higher degree in field experiments. Emission curves related to runoff water were similar in repeated field experiments. Relative humidity, temperature and global radiation were identified as meteorological factors that affect leaching by complex interaction besides the amount of driving rain. T2 - 12th International Conference 'Advances in Coatings Technology ACT´16' CY - Sosnowiec, Poland DA - 08.11.2016 KW - Biocide KW - Leaching KW - Coating PY - 2016 SN - 978‒83‒63555‒50‒4 SP - Paper 51, 1 EP - 10 AN - OPUS4-38236 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Schoknecht, Ute A1 - Töpfer, Antje A1 - Uhlig, S. A1 - Baldauf, H. T1 - Characterisation of leaching of biocidal active substances of main group 2 'preservatives' from different materials under weathering conditions (Project No. (FKZ) 3708 65 404, Report No. (UBA-FB) 001641/E) N2 - Anwendungen von Bioziden in Materialien für Außenanwendungen sind mögliche Quellen für Biozide in Umweltkompartimenten infolge von witterungsbedingten Auswaschprozessen. Im Bericht werden Leachingprozesse und -parameter als auch Methoden zu deren Untersuchung unter Labor- und Freilandversuchsbedingungen beschrieben. Vorteile und Grenzen der verschiedenen Herangehensweisen zur Untersuchung von Leachingprozessen werden diskutiert. Standardisierte Auswaschtests sowie in der Fachliteratur publizierte Auswaschexperimente werden zusammenfassend dargestellt. Es wird beschrieben, wie Leachingdaten gemäß Technischem Leitfaden zur Biozidprodukten-Richtlinie 98/8/EG für eine Risikobewertung genutzt werden. Ein alternativer Ansatz zur mathematischen Modellierung von Leachingtest-Daten wurde erprobt und wird im Bericht erläutert. Potentiell lassen sich mit dem vorgeschlagenen Ansatz bestimmte gegenwärtig auftretende Schwierigkeiten bei der Risikobewertung umgehen. Applications of biocides in outdoor materials are potential sources of biocides in environmental compartments due to leaching processes under weathering conditions. Leaching processes and parameters as well as methods to investigate leaching processes under laboratory and semi-field conditons are described in the report. Benefits and limitations of different test approaches are discussed. Standardised leaching tests as well as leaching experiments reported in scientific literature are listed. The application of leaching data for risk assessments according to the Technical Guidance Documents for the Biocidal Products Directive (98/8/EC) is described. An alternative approach for mathematical modelling of leaching data was tested and is Explained in the report. Certain difficulties that currently appear during risk assessments may be circumvented by the proposed approach. KW - Test procedures KW - Biocide KW - EU biocidal products directive 98/8/EC KW - Material preservatives KW - In-can preservatives KW - Film preservatives KW - Fibre KW - Leather KW - Rubber and polymerised materials preservatives KW - Masonry preservatives KW - Weathering KW - Leaching KW - Mathematical modelling KW - Risk assessment KW - Biozid KW - EU Biozidproduktenrichtlinie 98/8/EG KW - Materialschutzmittel KW - Topf-Konservierungsmittel KW - Beschichtungsschutzmittel KW - Schutzmittel für Fasern KW - Leder KW - Gummi und polymerisierte Materialien KW - Schutzmittel für Mauerwerk KW - Bewitterung KW - Auswaschung KW - Testverfahren KW - Laborversuche KW - Freilandversuche KW - Mathematische Modellierung KW - Risikobewertung PY - 2012 UR - http://www.umweltbundesamt.de/publikationen/characterisation-of-leaching-of-biocidal-active SN - 1862-4804 SN - 0722-186X IS - 62 SP - 1 EP - 118 PB - Umweltbundesamt CY - Dessau-Roßlau AN - OPUS4-26520 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -