News

05. April 2018, Topic: Aquatic Ecotoxicology

Bioassays for the assessment of water quality

Bioassays for the assessment of water quality

Within the Modular Stepwise Procedure a concept has been developed for the overall assessment of rivers that are contaminated with waste water using ecotoxicological bioassays. The concept represents a first step towards an integrative assessment of water quality.

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29. March 2018, Topic: Aquatic Ecotoxicology, Soil Ecotoxicology, Sediment Ecotoxicology, Risk Assessment

Ecotoxicology for ZHAW students

Ecotoxicology for ZHAW students

Wie in jedem Jahr hat das Oekotoxzentrum im März 2018 angehenden Biotechnologinnen und Biotechnologen eine Einführung in die Ökotoxikologie gegeben.

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31. January 2018, Topic: Aquatic Ecotoxicology, Sediment Ecotoxicology, Risk Assessment

Symposium "Environmental Monitoring with Bioassays" on 5./6. June 2018

Symposium "Environmental Monitoring with Bioassays" on 5./6. June 2018

The use of bioassays to assess water quality has many advantages and the acceptance of bioassays has increased in recent years. On the occasion of its 10th anniversary, the Ecotox Centre organises a symposium on the topic.

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22. December 2017, Topic: Aquatic Ecotoxicology, Risk Assessment

Eawag supports introduction of effect-based environmental quality criteria

Eawag supports introduction of effect-based environmental quality criteria

At the end of November, the Federal Council has sent the new risk-based required limits for biocides, plant protection products and other micro-pollutants within the Water Protection Ordinance in consultation. A new Eawag fact sheet shows why these values are meaningful and necessary.

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24. November 2017, Topic: Aquatic Ecotoxicology, Risk Assessment

Estrogens in surface waters - Screening and risk assessment for Europe

Estrogens in surface waters - Screening and risk assessment for Europe

In the framework of an international project, European water samples were analysed for estrogens using various biological and chemical methods. Bioassays based on cell cultures were shown to be well suited to detect the substances that are to be monitored across Europe.

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24. November 2017, Topic: Aquatic Ecotoxicology

Immunotoxicity: an underestimated ecotoxicological effect of chemicals

Immunotoxicity: an underestimated ecotoxicological effect of chemicals

Numerous substances influence the ability of wild animals to cope with pathogens. However, there are no established bioassays in ecotoxicology to screen environmental samples and chemicals for immunotoxic effects. The Ecotox Centre would like to improve this situation.

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24. November 2017, Topic: Aquatic Ecotoxicology, Soil Ecotoxicology, Sediment Ecotoxicology, Risk Assessment

 Info sheet on pyrethroides

Info sheet on pyrethroides

Pyrethroids are among the most frequently used pesticides in the world. For this reason, the Ecotox Centre has published a new info sheet on the emissions, mechanism of action, toxicity and risk of the substances.

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

How long to collect water samples?

How long to collect water samples?

If the measured concentration of a substance in surface waters exceeds its quality criterion, the water quality is assessed as poor. But over which time period should the water sample be collected and the concentration be averaged?

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21. November 2017, Topic: Sediment Ecotoxicology, Risk Assessment

Progress in the assessment of sediment quality

Progress in the assessment of sediment quality

Together with eight cantons, the Ecotox Centre has conducted extensive field testing to investigate the comparability of different methods for sampling and sample preparation of sediments.

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31. October 2017, Topic: Sediment Ecotoxicology, Risk Assessment

A focus on communities in freshwater sediments

A focus on communities in freshwater sediments

In April 2017, the first French-Swiss conference on communities in freshwater sediments was held in Villié-Morgon (F). A new publication summarizes the findings from the workshop.

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