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Toxic paint on boats affect snails in the Baltic Sea

EVENT

Date: 05 October 2017, 11.00 AM - 05 October 2017, 11.45 AM
Venue: Aula Magna, Right Auditorium

At Stockholm University's Forskardagar (Researchers' days), recently defended PhD projects are presented to the public in short lectures or discussions. In one of these lectures, Maria Bighiu, researcher at the Dept. of Analytical Chemistry and Environmental Science, will address the environmental impact of antifouling paints in the Baltic Sea.

Maria Bighiu, PhD in Applied Environmental Science, defended her thesis in 2017: Use and environmental impact of antifouling paints in the Baltic Sea

Biocide-based antifouling paints are the most common method for preventing biofouling, i.e. the growth of algae, barnacles and other organisms on boat hulls. Antifouling paints for leisure boats are predominantly based on copper as the main biocide, with zinc present as a pigment and stabilizer. Both metals are released from the paint matrix into the water column, leading to contamination of marinas which typically have only limited water exchange. Thus, the aim of this PhD thesis was to describe the use of antifouling paints in different regions in Sweden, as well as the associated environmental consequences with regard to contamination of the environment and toxicity to non-target aquatic snails.

The results presented in this thesis depict some important aspects of antifouling paint use in brackish water and highlight the necessity of implementing a suitable management practice for the heavily contaminated biofouling waste in order to minimize the risk to soils. In addition, the evidence of toxicity to snails in marinas can be used as a basis to increase the public understanding of the impact of recreational boating and encourage people to choose less toxic alternatives to antifouling paints.

 

About "Forskardagarna"

During three days of Stockholm University's Forskardagar, recently defended PhD projects are presented to the public in short lectures or discussions. The event is mainly directed towards high school students all interested visitors are welcome!

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