Bioaccumulation and Toxicity of CuO Nanoparticles by a Freshwater Invertebrate after Waterborne and Dietborne Exposures

The incidental ingestion of engineered nanoparticles (NPs) can be an important route of uptake for aquatic organisms. Yet, knowledge of dietary bioavailability and toxicity of NPs is scarce. Here we used isotopically modified copper oxide (65CuO) NPs to characterize the processes governing their bio...

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Bibliographic Details
Published in:Environmental science & technology 2014-09, Vol.48 (18), p.10929-10937
Main Authors: Croteau, Marie-Noële, Misra, Superb K, Luoma, Samuel N, Valsami-Jones, Eugenia
Format: Article
Language:English
Subjects:
Animals
Aquatic life
Aquatic Organisms - drug effects
Bioaccumulation
Copper - metabolism
Copper - toxicity
Diet
Environmental Exposure - analysis
Environmental impact
Fresh Water
Invertebrata
Lymnaea - drug effects
Lymnaea stagnalis
Mollusks
Nanoparticles
Nanoparticles - toxicity
Solutions
Time Factors
Toxicity
Water Pollutants, Chemical - toxicity
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Summary:The incidental ingestion of engineered nanoparticles (NPs) can be an important route of uptake for aquatic organisms. Yet, knowledge of dietary bioavailability and toxicity of NPs is scarce. Here we used isotopically modified copper oxide (65CuO) NPs to characterize the processes governing their bioaccumulation in a freshwater snail after waterborne and dietborne exposures. Lymnaea stagnalis efficiently accumulated 65Cu after aqueous and dietary exposures to 65CuO NPs. Cu assimilation efficiency and feeding rates averaged 83% and 0.61 g g–1 d–1 at low exposure concentrations (
ISSN:0013-936X
1520-5851
DOI:10.1021/es5018703