News - Risk Assessment
02. September 2020
New faces at the Ecotox Centre
We welcome our new colleagues Alena Tierbach and Carolin Riegraf.
Read more09. July 2020
Info sheet on PFAS in the environment
Per- and polyfluorinated alkyl substances (PFAS) are very stable and accumulate worldwide in the environment and in organisms. A new info sheet gives information on their occurrence, their toxicity and the regulatory context.
Read more15. May 2020
TKTD-modelling for dummies
A milestone has been reached by processing one of the TKTD models for the use of practitioners without modelling experience. With the GUTs model, the mortality can be predicted for a given concentration curve of a chemical.
Read more11. May 2020
Assessment of sediment quality in artificial canals in Valais
Ecotoxicological bioassays and the assessment of invertebrate benthic communities complement physico-chemical analyses when assessing sediment quality. The sediment quality in three artificial channels in the Valais was severely affected.
Read more08. May 2020
Fungicidal azoles cause concern
In Switzerland, these substances are detected in most samples from water, sediment, soil and organisms. However, a lack of toxicity data for many azoles makes it difficult to assess the risk they pose.
Read more23. April 2020
Effect-based limits come into force - milestone for a long-term project
With the amendment to the Water Protection Ordinance of 1 April 2020, an important goal was achieved: For 19 pesticides and three pharmaceuticals, the quality criteria developed by the Ecotox Centre now apply as limit values for surface waters.
Read more17. March 2020
COVID-19 Information
Due to the current situation regarding the coronavirus / COVID-19, all Ecotox Centre offices and labs are closed starting 17 March 2020. Employees work from home and can be contacted via e-mail.
Read more22. November 2019
"Ecotoxicology will continue to gain in importance" - in conversation with Inge Werner
The longtime former head of the Ecotox Centre, Inge Werner, handed over management to Benoit Ferrari on 1 September. Here she reflects on the past and future of practical ecotoxicology in Switzerland.
Read more21. November 2019
Ecotoxicological effects of pesticides in stream sediments
Pesticides in sediments cause adverse effects on benthic organisms. This was shown by a monitoring study conducted by the Ecotox Centre and Eawag on five streams in agricultural areas. Crustaceans were particularly affected. Concentrations of several insecticides, including chlorpyrifos and the pyrethroid cypermethrin, exceeded effect thresholds, indicating impaired sediment quality.
Read more19. November 2019
Video tutorial on the L-YES
A video tutorial shows the preparation and execution of the yeast estrogen screen with lyticase for the detection of estrogenic substances.
Read more
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