NRP50

28: Ecological risk assessment of UV filters

UV-absorbing chemicals enter the aquatic ecosystem from direct application in sunscreens and via wastewater from their use in cosmetics and as additives. In our project we will analyze residues of these compounds in aquatic organisms and their effects on reproduction.

Fent Karl, Fachhochschule Nordwerstschweiz
e-mail: karl.fentl@fhnw.ch

Background

UV filters are used in cosmetics and in the UV protection of various materials and enter aquatic ecosystems. Data on environmental concentrations are sparse. A fact that is also true for potential effects on biota, in particular concerning reproductive effects. The ecological risk of these chemicals for aquatic ecosystems is not yet clear.

Aim

We will analyze mussels and wild fish from rivers and lakes for UV filter residues to broaden the knowledge about environmental concentrations. UV filters will also be analyzed for their potential reproductive effects in water fleas. We will evaluate at which UV filter concentration level reproduction and sex determination are affected.

Significance

The potential risk of single UV filters and their mixtures for aquatic life will be assessed by comparing their environmental level with their effect concentrations.