Biocides from facade coatings in urban surface waters: Estimating the leaching of biocides from render by polyacrylate - water partitioning constants?

Ulla E Bollmann, Katarzyna Styszko, Yi Ou, Philipp Mayer, Stefan Trapp, Jes Vollertsen, Kai Bester

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearchpeer-review

Abstract

Leaching of biocides from façade coatings attracts more and more attention within recent years. In-can as well as film preserving biocides are added to polymer resin based renders and paints in order protect from microbial spoilage. However, several studies revealed that biocides leach from the façade coating and can be detected in urban stormwater runoff.

The present study focussed on the occurrence of biocides in the aqueous environment - both urban water close to the sources as well as further away in fresh and marine waters. In addition, monitoring the stomwater run-off from a suburban catchment was performed in order to get knowledge about emission rates and processes. A first estimation of the leachability of a biocide is usually done using its octanol-water partition constant as well as water solubility. The present study introduces the possiblity of using the polyacrylate-water partitioning constant in comparison to render-water distribution constants. This was done based on the hypothesis that the render-water distribution constant can be described as the sum of the partitioning to polyacrylate, carbonates, sand particles and other render ingredients.
Original languageEnglish
Title of host publicationSetac Europe 25th Annual Meeting: Abstract Book
PublisherSociety of Environmental Toxicology and Chemistry
Publication dateMay 2015
Publication statusPublished - May 2015
EventSETAC Europe 25th Annual Meeting: Environmental protection in a multi-stressed world: challenges for science, industry and regulators - Barcelona, Spain
Duration: 3 May 20157 May 2015
Conference number: 25

Conference

ConferenceSETAC Europe 25th Annual Meeting
Number25
CountrySpain
CityBarcelona
Period03/05/201507/05/2015

Keywords

  • Leaching of biocides
  • polymer resin based renders
  • Urban stormwater runoff

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    Bollmann, U. E., Styszko, K., Ou, Y., Mayer, P., Trapp, S., Vollertsen, J., & Bester, K. (2015). Biocides from facade coatings in urban surface waters: Estimating the leaching of biocides from render by polyacrylate - water partitioning constants? In Setac Europe 25th Annual Meeting: Abstract Book Society of Environmental Toxicology and Chemistry.