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http://hdl.handle.net/10773/17437
Title: | Effects of soil and dietary exposures to Ag nanoparticles and AgNO3 in the terrestrial isopod Porcellionides pruinosus |
Author: | Tourinho, Paula S. van Gestel, Cornelis A. M. Jurkschat, Kerstin Soares, Amadeu M. V. M. Loureiro, Susana |
Keywords: | Toxicity Routes of exposure Silver nanoparticles Bioavailability |
Issue Date: | 2015 |
Publisher: | Elsevier |
Abstract: | The effects of Ag-NPs and AgNO3 on the isopod Porcellionides pruinosus were determined upon soil and dietary exposures. Isopods avoided Ag in soil, with EC50 values of ~16.0 and 14.0 mg Ag/kg for Ag-NPs and AgNO3, respectively. Feeding inhibition tests in soil showed EC50s for effects on consumption ratio of 127 and 56.7 mg Ag/kg, respectively. Although similar EC50s for effects on biomass were observed for nanoparticulate and ionic Ag (114 and 120 mg Ag/kg dry soil, respectively), at higher concentrations greater biomass loss was found for AgNO3. Upon dietary exposure, AgNO3 was more toxic, with EC50 for effects on biomass change being >1500 and 233 mg Ag/kg for Ag-NPs and AgNO3, respectively. The difference in toxicity between Ag-NPs and AgNO3 could not be explained from Ag body concentrations. This suggests that the relation between toxicity and bioavailability of Ag-NPs differs from that of ionic Ag in soils. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/17437 |
DOI: | 10.1016/j.envpol.2015.05.044 |
ISSN: | 0269-7491 |
Appears in Collections: | CESAM - Artigos DBio - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Tourinho et al. - 2015 - Effects of soil and dietary exposures to Ag nanopa.pdf | 750.51 kB | Adobe PDF |
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