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Silver Bioaccumulation Dynamics in a Freshwater Invertebrate after Aqueous and Dietary Exposures to Nanosized and Ionic Ag

Dates

Year
2011

Citation

Croteau, Marie-Noële, Misra, Superb K, Luoma, Samuel N, and Valsami-Jones, Eugenia, 2011, Silver Bioaccumulation Dynamics in a Freshwater Invertebrate after Aqueous and Dietary Exposures to Nanosized and Ionic Ag: Environmental Science & Technology, v. 45, iss. 15, p. 6600-6607.

Summary

We compared silver (Ag) bioavailability and toxicity to a freshwater gastropod after exposure to ionic silver (Ag+) and to Ag nanoparticles (Ag NPs) capped with citrate or with humic acid. Silver form, exposure route, and capping agent influence Ag bioaccumulation dynamics in Lymnaea stagnalis. Snails efficiently accumulated Ag from all forms after either aqueous or dietary exposure. For both exposure routes, uptake rates were faster for Ag+ than for Ag NPs. Snails efficiently assimilated Ag from Ag NPs mixed with diatoms (assimilation efficiency (AE) ranged from 49 to 58%) and from diatoms pre-exposed to Ag+ (AE of 73%). In the diet, Ag NPs damaged digestion. Snails ate less and inefficiently processed the ingested food, which adversely [...]

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  • USGS National Research Program

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Added to ScienceBase on Fri Apr 19 10:15:13 MDT 2013 by processing file <b>Mechanisms of biological and ecological response in disturbed aquatic ecosystems (Thompson::Brown:Cain:Carter:Fend:Hornberger:Stewart:Luoma).xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd338f">https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd338f</a>

Additional Information

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1021/es200880c

Citation Extension

journalEnvironmental Science & Technology
parts
typePages
value6600-6607
typeVolume
value45
typeIssue
value15
citationTypeJournal Article

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