Department Environmental Toxicology

News Environmental Toxicology

May 2, 2022 –

Ozonation is an established treatment process to remove micropollutants from wastewater. However, since unstable toxic reaction products can be formed in the process, biological post-treatment is necessary. Results from the Ecotox...

Ozonation is an established treatment process to remove micropollutants from wastewater. However, since unstable toxic reaction products can be formed in the process, biological post-treatment is necessary. Results from the Ecotox Centre and Eawag show how well different post-treatment methods reduce ecotoxicological effects. The combination of ozonation and activated carbon proved to be the most effective.

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April 26, 2022 –

Eawag researchers are using computer algorithms to predict the toxicity of chemicals to fish. Machine learning can help set priorities for experiments and, in the longer term, enable a tremendous reduction of animal testing.

Eawag researchers are using computer algorithms to predict the toxicity of chemicals to fish. Machine learning can help set priorities for experiments and, in the longer term, enable a tremendous reduction of animal testing.

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March 10, 2022 –

Barbara Jozef, a postdoctoral scientist in the Department of Environmental Toxicology, took part in the joint monthly webinar "Serum-free: How and Why?" organized by the American Society for Cellular and Computational Toxicology...

Barbara Jozef, a postdoctoral scientist in the Department of Environmental Toxicology, took part in the joint monthly webinar "Serum-free: How and Why?" organized by the American Society for Cellular and Computational Toxicology (ASCCT) and the European Society of Toxicology In Vitro (ESTIV).

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February 10, 2022 –

Eawag researchers have won a competition organised by Britain’s National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3R). The prize money is awarded for use in research to develop technologies to...

Eawag researchers have won a competition organised by Britain’s National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3R). The prize money is awarded for use in research to develop technologies to replace animal testing.

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January 27, 2022 –

Melissa von Wyl did her Master's Thesis entitled "Influence of Insecticides on the Developing Nervous System of Zebrafish Larvae" in the Molecular Toxicology group in the Department of Environmental Toxicology and successfully...

Melissa von Wyl did her Master's Thesis entitled "Influence of Insecticides on the Developing Nervous System of Zebrafish Larvae" in the Molecular Toxicology group in the Department of Environmental Toxicology and successfully passed the oral and written examination at the University of Zurich.

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December 14, 2021 –

Louis Carles, postdoctoral scientist in the Department of Environmental Toxicology, won the award for the best live presentation during the webinar “EcotoxicoMic for Young Researchers”.

Louis Carles, postdoctoral scientist in the Department of Environmental Toxicology, won the award for the best live presentation during the webinar “EcotoxicoMic for Young Researchers”.

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December 7, 2021 –

With around 200 pictures and texts, the new Water Timeline takes you through 200 years of the eventful history of Swiss water protection. It aims to show how shifts towards more sustainable management of natural resources can be...

With around 200 pictures and texts, the new Water Timeline takes you through 200 years of the eventful history of Swiss water protection. It aims to show how shifts towards more sustainable management of natural resources can be shaped. 

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December 3, 2021 –

Jenny Maner, PhD student in the Department Environmental Toxicology, has been awarded two prizes for the presentation of her project at recent scientific conferences.

Jenny Maner, PhD student in the Department Environmental Toxicology, has been awarded two prizes for the presentation of her project at recent scientific conferences.

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November 23, 2021 –

Researchers Christoph Vorburger and Florian Altermatt talk about the importance and state of aquatic biodiversity in Switzerland and Eawag’s commitment to conserving natural biodiversity.

Researchers Christoph Vorburger and Florian Altermatt talk about the importance and state of aquatic biodiversity in Switzerland and Eawag’s commitment to conserving natural biodiversity.

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October 26, 2021 –

Microplastics, owing to their chemical properties, can carry micropollutants into a fish’s digestive system where they are subsequently released through the action of its gastric and intestinal fluids. Scientists of EPFL and...

Microplastics, owing to their chemical properties, can carry micropollutants into a fish’s digestive system where they are subsequently released through the action of its gastric and intestinal fluids. Scientists of EPFL and Eawag, working in association with other research institutes, have studied this process by looking specifically at progesterone – often pointed to as an endocrine disrupter.

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October 2, 2021 –

At the EPFL’s “Magistrale” graduation ceremony this year, Kristin Schirmer was recognised for her teaching work at the institution. In this interview she explains what this work means to her.

At the EPFL’s “Magistrale” graduation ceremony this year, Kristin Schirmer was recognised for her teaching work at the institution. In this interview she explains what this work means to her.

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September 23, 2021 –

The "gene scissors" CRISPR/Cas9 can be used to precisely modify genes in order to study their function in an organism. A researcher at Eawag has now succeeded for the first time in establishing the gene scissors for a fish cell...

The "gene scissors" CRISPR/Cas9 can be used to precisely modify genes in order to study their function in an organism. A researcher at Eawag has now succeeded for the first time in establishing the gene scissors for a fish cell line of rainbow trout. This means that, as of now, genetically modified cell lines can be produced. These allow alternatives to ecotoxicological tests on living animals.

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September 8, 2021 –

Barbara Jozef is the winner of the 11th World Congress on Alternatives and Animal Use in the Life Sciences.

 

Barbara Jozef is the winner of the 11th World Congress on Alternatives and Animal Use in the Life Sciences.

 

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August 17, 2021 –

Toxic substances in the environment can harm the nervous system of fish embryos. Now, researchers at Eawag have developed a computer model that helps to better understand how the damage occurs.

Toxic substances in the environment can harm the nervous system of fish embryos. Now, researchers at Eawag have developed a computer model that helps to better understand how the damage occurs.

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July 15, 2021 –

Open Science is an important development in science - open access to the results of research. Eawag supports these and makes a growing part of its research data, including descriptions, images and even software, available publicly...

Open Science is an important development in science - open access to the results of research. Eawag supports these and makes a growing part of its research data, including descriptions, images and even software, available publicly and free of charge on the Eawag platform ERIC or, in special cases, on discipline-specific, international databases. ERIC complements the long-standing platform DORA for scientific publications.

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June 24, 2021 –

The OECD gives the green light to the fish cell line assay developed at Eawag. This paves the way for companies and authorities around the world to determine the environmental toxicology of chemicals without having to resort to...

The OECD gives the green light to the fish cell line assay developed at Eawag. This paves the way for companies and authorities around the world to determine the environmental toxicology of chemicals without having to resort to animal testing.

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June 17, 2021 –

Toxicity tests are currently still carried out mainly on livestock. Within the context of environmental risk assessment, this is done most commonly on fish. An alternative method developed by Eawag researchers is currently...

Toxicity tests are currently still carried out mainly on livestock. Within the context of environmental risk assessment, this is done most commonly on fish. An alternative method developed by Eawag researchers is currently overcoming crucial hurdles to its widespread use in practice. Thanks in part to the persuasive efforts of the scientists involved.

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March 30, 2021 –

Ecotoxicological tests need to be extremely accurate – which often poses challenges in research and practice. Eawag has now developed a computer model that enables even more accurate testing at high throughput; the model is...

Ecotoxicological tests need to be extremely accurate – which often poses challenges in research and practice. Eawag has now developed a computer model that enables even more accurate testing at high throughput; the model is simple, widely applicable and saves resources.

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March 25, 2021 –

In her PhD thesis, Alena Tierbach could show that the zebrafish embryo-derived PAC2 cell line expresses a fully functional mercapturic acid pathway.

In her PhD thesis, Alena Tierbach could show that the zebrafish embryo-derived PAC2 cell line expresses a fully functional mercapturic acid pathway.

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March 22, 2021 –

The motto of today’s World Water Day is “Valuing water – What means water to you?”. With this motto, the United Nations wants to raise awareness of the vital importance of water and call on people to think about the value of...

The motto of today’s World Water Day is “Valuing water – What means water to you?”. With this motto, the United Nations wants to raise awareness of the vital importance of water and call on people to think about the value of water. In an interview, Eawag Director Janet Hering explains the importance of water for the aquatic research institute Eawag and also her personally.

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2020

December 11, 2020 –

The ETH Zurich appoints biologist Kristin Schirmer, head of the Environmental Toxicology department of Eawag, as titular professor.

The ETH Zurich appoints biologist Kristin Schirmer, head of the Environmental Toxicology department of Eawag, as titular professor.

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September 8, 2020 –

Process Engineer Adriano Joss from Eawag water research institute has been working for many years on wastewater treatment plants and the removal of micropollutants from water. Together with Ralf Kägi, Head of the Eawag Particle...

Process Engineer Adriano Joss from Eawag water research institute has been working for many years on wastewater treatment plants and the removal of micropollutants from water. Together with Ralf Kägi, Head of the Eawag Particle Laboratory, he has compiled the current status of knowledge on microplastics. In an interview, he presents the most important findings. We have recently posted detailed information on the website “Microplastics in the environment”.

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May 25, 2020 –

126 Swiss researchers, including 6 from Eawag, want to draw the attention their Swiss compatriots to the scientific evidence showing the link between the emergence of pandemics and human disturbance of the natural environment.

126 Swiss researchers, including 6 from Eawag, want to draw the attention their Swiss compatriots to the scientific evidence showing the link between the emergence of pandemics and human disturbance of the natural environment.

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February 4, 2020 –

Although use of the fungicide hexachlorobenzene has been banned since 2004, this compound is chemically stable – and accumulates in the polar regions where humpback whales replenish their fat reserves each year. Cell line studies...

Although use of the fungicide hexachlorobenzene has been banned since 2004, this compound is chemically stable – and accumulates in the polar regions where humpback whales replenish their fat reserves each year. Cell line studies conducted at Eawag have now shown that, while hexachlorobenzene does not have acute toxic effects, it can cause damage to DNA in humpback whale cells.

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2019

September 4, 2019 –

The 3RCC award has been conferred on two Eawag researchers by the 3R Swiss Competence Centre (3RCC) for their outstanding research work. For the first time ever, the researchers managed to obtain ISO certification for a toxicity...

The 3RCC award has been conferred on two Eawag researchers by the 3R Swiss Competence Centre (3RCC) for their outstanding research work. For the first time ever, the researchers managed to obtain ISO certification for a toxicity test using cultured fish gill cells, thanks to their project work in this area. This represents a milestone in the promotion of alternatives to animal experiments. The prize was awarded on September 2nd in Bern.

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August 15, 2019 –

Swiss groundwater contains numerous pesticide degradation products. This has been discovered by an extensive screening by Eawag and ETH Zurich. The transformation products (metabolites) originate predominantly from pesticides from...

Swiss groundwater contains numerous pesticide degradation products. This has been discovered by an extensive screening by Eawag and ETH Zurich. The transformation products (metabolites) originate predominantly from pesticides from agriculture.

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July 3, 2019 –

Swiss 3R Competence Centre (3RCC) to fund six projects worth CHF 1.2 million to advance the replacement, reduction and refinement of animal experiments.

Swiss 3R Competence Centre (3RCC) to fund six projects worth CHF 1.2 million to advance the replacement, reduction and refinement of animal experiments.

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June 13, 2019 –

Some insecticides, such as the neonicotinoids, have an effect on the nervous systems of organisms. But not only, as shown by the results of a new study in which Eawag scientists took part. And: the resulting damage can be very...

Some insecticides, such as the neonicotinoids, have an effect on the nervous systems of organisms. But not only, as shown by the results of a new study in which Eawag scientists took part. And: the resulting damage can be very different, depending on the species of fish.

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April 2, 2019 –

Two studies by Eawag and the Ecotox Centre have once again shown that surface waters in agricultural catchment areas are heavily contaminated with plant protection products. Concentrations of individual substances persisting for...

Two studies by Eawag and the Ecotox Centre have once again shown that surface waters in agricultural catchment areas are heavily contaminated with plant protection products. Concentrations of individual substances persisting for several months pose a risk of chronic toxicity and, for extended periods, exceed the levels at which a risk of acute toxicity exists for aquatic plants and organisms. In most of the samples, 30 or more different active ingredients were detected. Studies of stream biodiversity and bioassays confirmed the threat posed by these mixtures of substances.

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March 14, 2019 –

A new device developed at Eawag now allows Scientists to determine whether, and to what extent, fragrances in the environment are absorbed in fish without using animals. This is possible thanks to the use of a mirror-polished...

A new device developed at Eawag now allows Scientists to determine whether, and to what extent, fragrances in the environment are absorbed in fish without using animals. This is possible thanks to the use of a mirror-polished stainless steel chamber and a permeable membrane with a layer of intestinal fish cells.

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March 4, 2019 –

A new study by an interdisciplinary team from Eawag has shown that substances from agriculture affect living organisms in rivers and streams to a greater extent than treated wastewater, which has less impact on the species...

A new study by an interdisciplinary team from Eawag has shown that substances from agriculture affect living organisms in rivers and streams to a greater extent than treated wastewater, which has less impact on the species composition of microorganisms. 

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