News

23. May 2017, Topic: Aquatic Ecotoxicology, Risk Assessment

Aquatic fungi - a neglected class

Aquatic fungi - a neglected class

Aquatic fungi degrade organic material and thereby play a key role in the food web of freshwater ecosystems. However, the organisms are not considered in the risk assessment of fungicides. This should change, the ecotoxic center feels.

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19. May 2017, Topic: Aquatic Ecotoxicology

New project combines thin-layer chromatography and bioassays

New project combines thin-layer chromatography and bioassays

Water and food may contain mixtures of chemicals whose toxicity is difficult to assess with conventional analysis. Effect-based methods coupled with thin-layer chromatography and LC-MS/MS are a promising new method that could help.

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18. May 2017, Topic: Aquatic Ecotoxicology, Soil Ecotoxicology, Sediment Ecotoxicology, Risk Assessment

Visitors at the Ecotox Centre

Visitors at the Ecotox Centre

In the last months, we have been able to welcome two visitors to the Ecotox Centre in Lausanne: Dr. Leire Méndez-Fernández of the University of the Basque Country in Spain and Stéphane Pesce of the National Research Institute of Science and Technology for Environment and Agriculture (irstea) in France.

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04. April 2017, Topic: Aquatic Ecotoxicology, Risk Assessment

Persistently high pesticide levels found in small streams

Persistently high pesticide levels found in small streams

Small watercourses are contaminated with large numbers of herbicides, fungicides and insecticides. A new study shows that the legal requirements specified for water quality are not met in any of the five Swiss streams investigated. Indeed, thresholds for acute toxicity to aquatic organisms were also exceeded.

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20. March 2017, Topic: Aquatic Ecotoxicology, Soil Ecotoxicology, Sediment Ecotoxicology, Risk Assessment

Info sheet on the evaluation of glyphosate

Info sheet on the evaluation of glyphosate

A new info sheet provides information on the (eco)toxicological evaluation of glyphosate and explains how the differences in the evaluation by various organisations come about.

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10. February 2017, Topic: Aquatic Ecotoxicology, Sediment Ecotoxicology

New report on measuring PCBs and dioxins in surface waters

New report on measuring PCBs and dioxins in surface waters

This report evaluates the suitability of sediment analyses and of measurements with passive samplers in the water phase for localising PCB and dioxin sources. It is shown that PDMS passive samplers are well suited for this purpose.

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20. January 2017, Topic: Soil Ecotoxicology, Sediment Ecotoxicology

Students learn about ecotoxicology

Students learn about ecotoxicology

In which ways can earthworms assist us? What are bioassays used for? The Ecotox Centre answered these and other questions to high school pupils at the EPFL's Journées des gymnasiens.

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06. December 2016, Topic: Soil Ecotoxicology

SSSS Annual Meeting 9th/10th February 2017 in Berne

SSSS Annual Meeting 9th/10th February 2017 in Berne

On 9th/10th of February 2017, the annual meeting of the Soil Science Society of Switzerland will be held in Berne. The topic will be "Soil Science and Soil Protection: a Challenge across Boundaries".

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29. November 2016, Topic: Sediment Ecotoxicology, Aquatic Ecotoxicology

Oligochaetes indicate sediment quality

Oligochaetes indicate sediment quality

Aquatic oligchaetes are well suited for the assessment of biological sediment quality. However, difficulties with their species determination inhibit their use as routine indicator organisms. A genetic species determination using genetic barcodes could change the situation and promote the application of the method.

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22. November 2016, Topic: Aquatic Ecotoxicology

Bioassays assess ozonation and post-treatment of wastewater

Bioassays assess ozonation and post-treatment of wastewater

Ozonation is an established treatment technology to remove micropollutants from wastewater. However, labile toxic reaction products may be formed during ozonation. Therefore, a biological post-treatment step is needed. Using bioassays, the Ecotox Centre has assessed how efficient ecotoxicological effects are reduced by ozonation in combination with various post-treatment technologies.

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