| Literature DB >> 26071943 |
Paula S Tourinho1, Cornelis A M van Gestel2, Kerstin Jurkschat3, Amadeu M V M Soares4, Susana Loureiro4.
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.Entities:
Keywords: Bioavailability; Routes of exposure; Silver nanoparticles; Toxicity
Mesh：
Substances：
Year: 2015 PMID： 26071943 DOI： 10.1016/j.envpol.2015.05.044
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071