Internationale Rechnungslegung und ihre Auswirkungen auf Handels- und Steuerbilanz

Kahle, Holger

doi:10.1007/978-3-663-10391-2

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They are typically added to the renders and paints in the wet state and are meant to slowly migrate to the surface of the dry coating during wetting events . However, they also have the potential to enter the environment, at levels where they sometimes exceed water quality standards or create ecotoxicological concern. , Studies have demonstrated that some of the biocides used in façade coatings still exist in surface waters or urban stormwater sewers despite a ban on their agricultural or public use indicating that another source besides agriculture is relevant. − …”

Section: Introductionmentioning

confidence: 99%

Leaching of Biocides from Façades under Natural Weather Conditions

Burkhardt

Zuleeg

Vonbank

et al. 2012

Environ. Sci. Technol.

View full text Add to dashboard Cite

Biocides are included in organic building façade coatings as protection against biological attack by algae and fungi but have the potential to enter the environment via leaching into runoff from wind driven rain. The following field study correlates wind driven rain to runoff and measured the release of several commonly used organic biocides (terbutryn, Irgarol 1051, diuron, isoproturon, OIT, DCOIT) in organic façade coatings from four coating systems. During one year of exposure of a west oriented model house façade in the Zurich, Switzerland area, an average of 62.7 L/m(2), or 6.3% of annual precipitation came off the four façade panels installed as runoff. The ISO method for calculating wind driven rain loads is adapted to predict runoff and can be used in the calculation of emissions in the field. Biocide concentrations tend to be higher in the early lifetime of the coatings and then reach fairly consistent levels later, generally ranging on the order of mg/L or hundreds of μg/L. On the basis of the amount remaining in the film after exposure, the occurrence of transformation products, and the calculated amounts in the leachate, degradation plays a significant role in the overall mass balance.

show abstract