Testing the bioaccumulation potential of manufactured nanomaterials in the freshwater amphipod Hyalella azteca

Kuehr, Sebastian; Kaegi, Rälf; Maletzki, Dirk; Schlechtriem, Christian

doi:10.1016/j.chemosphere.2020.127961

Cited by 19 publications

(23 citation statements)

References 48 publications

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“…77 Moreover, the sequestration of Ag + by MTs has been previously demonstrated. 76,78,79 The much higher BCF in the freshwater amphipod Hyalella azteca exposed to AgNO 3 , and the delayed/incomplete Ag elimination observed in AgNO 3 and Ag-NP exposures was explained by Ag + association with metal-binding proteins, such as MTs. 79 It is possible that Ag + accumulation in P. acuta could be associated with MTs, leading to a slower elimination of this form.…”

Section: Ag-spiked Water Test and Sediment Testmentioning

confidence: 99%

“…76,78,79 The much higher BCF in the freshwater amphipod Hyalella azteca exposed to AgNO 3 , and the delayed/incomplete Ag elimination observed in AgNO 3 and Ag-NP exposures was explained by Ag + association with metal-binding proteins, such as MTs. 79 It is possible that Ag + accumulation in P. acuta could be associated with MTs, leading to a slower elimination of this form. Therefore, it can also be hypothesised that the slow elimination observed for some Ag-NPs could be of ionic Ag (from NP dissolution in exposure medium or intracellular dissolution) sequestered by MTs, while particulate Ag forms were eliminated faster.…”

Section: Ag-spiked Water Test and Sediment Testmentioning

confidence: 99%

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Toxicokinetics of pristine and aged silver nanoparticles in Physa acuta

Silva

Gestel

Verweij

et al. 2020

Environ. Sci.: Nano

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Section: Ag-spiked Water Test and Sediment Testmentioning

confidence: 99%

Section: Ag-spiked Water Test and Sediment Testmentioning

confidence: 99%

Toxicokinetics of pristine and aged silver nanoparticles in Physa acuta

Silva

Gestel

Verweij

et al. 2020

Environ. Sci.: Nano

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“…Two sets of experimental diets were prepared for the bioavailability test with H. azteca (dietary exposure) as described by Sebastian Kuehr, Kaegi, et al (2020), containing nominal concentrations of 1 and 50 mg test item/kg. In brief, 500 mg of Accepted Article agar-agar (Roth) were dissolved in hot ultrapure water and the respective amount of test item slurry was added to obtain the nominal concentrations.…”

Section: Production Of Fes Enriched Experimental Dietsmentioning

confidence: 99%

Are Fragrance Encapsulates Taken Up by Aquatic and Terrestrial Invertebrate Species?

Kuehr

Windisch

Schlechtriem

et al. 2021

Enviro Toxic and Chemistry

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The uptake potential of Fragrance Encapsulates (FEs) by aquatic or terrestrial organisms was investigated. Due to their size of below 5 mm and their This article is protected by copyright. All rights reserved. Accepted Articlepolymeric nature, FEs fall under the Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP) definition of microplastics (MPs).After use, FEs enter the sewer system and reach the sewage treatment plant (STP) where >90% of the FEs are likely to be removed by sorption to the sludge. When the STP-generated sludge is used as fertilizer for agricultural soils, this may lead to potential exposure of terrestrial invertebrates to FEs and especially those feeding on particles of a similar size as the FEs. Two aquatic (Corbicula fluminea (water exposure) and Hyalella azteca (water and dietary exposure)) and one terrestrial invertebrate (Eisenia andrei (soil exposure)) species were exposed to 50 mg/L (or mg/kg) double fluorescence labelled FEs (ø 5-50 µm). The results showed that FEs are available to aquatic and terrestrial invertebrates but species specific differences regarding the ability to ingest FEs may exist. The benthic grazer H. azteca showed no ingestion of FEs, whereas the capsules were readily ingested and egested by the unselective freshwater filter-feeder C. fluminea, as well as the terrestrial decomposer E. andrei. No signs of bioaccumulation of FEs were indicated by microscopic assessment.This article includes online-only Supporting Information.

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“…Environmental applications include the analysis of NPs in lake, river and sea water, wastewater, soil as well as sediment samples. 311,349 NPs were also detected and characterized in human tissues, 350 urine, [351][352][353] blood, 352,353 serum 353 exhaled breath condensate, 354 simulated gastric uid 355 and articial sweat mixture, 356 animal tissues and blood [357][358][359] and in different parts of plants [360][361][362] as well.…”

Section: Methodology and Applicationsmentioning

confidence: 99%