
You have already added 0 works in your ORCID record related to the merged Research product.
You have already added 0 works in your ORCID record related to the merged Research product.
<script type="text/javascript">
<!--
document.write('<div id="oa_widget"></div>');
document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=undefined&type=result"></script>');
-->
</script>
Behavior and chronic toxicity of two differently stabilized silver nanoparticles to Daphnia magna

pmid: 27449283
Behavior and chronic toxicity of two differently stabilized silver nanoparticles to Daphnia magna
While differences in silver nanoparticle (AgNP) colloidal stability, surface potential, or acute aquatic toxicity for differently stabilized AgNP have often been reported, these have rarely been studied in long-term ecotoxicity tests. In the current study, we investigated the chronic toxicity of AgNP to Daphnia magna over a 21-day period with two different stabilizers (citrate and detergent), representative for charge and sterical stabilizers, respectively. This was coupled with a series of short-term experiments, such as mass balance and uptake/depuration testing, to investigate the behavior of both types of AgNP during a typical media exchange period in the D. magna test for chronic toxicity. As expected, the sterically stabilized AgNP was more stable in the test medium, also in the presence of food; however, a higher uptake of silver after 24h exposure of the charge stabilized AgNP was found compared to the detergent-stabilized AgNP (0.046±0.006μgAgμgDW(-1) and 0.023±0.005μgAgμgDW(-1), respectively). In accordance with this, the higher reproductive effects and mortality were found for the charge-stabilized than for the sterically-stabilized silver nanoparticles in 21-d tests for chronic toxicity. LOEC was 19.2μgAgL(-1) for both endpoints for citrate-coated AgNP and >27.5μgAgL(-1) (highest tested concentration for detergent-stabilized AgNP). This indicates a link between uptake and toxicity. The inclusion of additional short-term experiments on uptake and depuration is recommended when longer-term chronic experiments with nanoparticles are conducted.
- University of Bremen Germany
- Technical University of Denmark Denmark
Silver, Behavior, Animal, Metal Nanoparticles, silver nanoparticle, Mass Spectrometry, D. magna, Chronic toxicity, Daphnia, Microscopy, Electron, Transmission, stabilizer effect, uptake, Animals, Toxicity Tests, Chronic, Water Pollutants, Chemical
Silver, Behavior, Animal, Metal Nanoparticles, silver nanoparticle, Mass Spectrometry, D. magna, Chronic toxicity, Daphnia, Microscopy, Electron, Transmission, stabilizer effect, uptake, Animals, Toxicity Tests, Chronic, Water Pollutants, Chemical
16 Research products, page 1 of 2
- 1997IsAmongTopNSimilarDocuments
- 2006IsAmongTopNSimilarDocuments
- 1999IsAmongTopNSimilarDocuments
- 2019IsAmongTopNSimilarDocuments
- 1994IsAmongTopNSimilarDocuments
chevron_left - 1
- 2
chevron_right
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).29 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10%
