| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6316643 | Environmental Pollution | 2015 | 8 Pages |
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 â¼16.0 and 14.0Â mg Ag/kg for Ag-NPs and AgNO3, respectively. Feeding inhibition tests in soil showed EC50s for effects on consumption ratio of 127 and 56.7Â mg Ag/kg, respectively. Although similar EC50s for effects on biomass were observed for nanoparticulate and ionic Ag (114 and 120Â 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 233Â 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.
Related Topics
Life Sciences
Environmental Science
Environmental Chemistry
Authors
Paula S. Tourinho, Cornelis A.M. van Gestel, Kerstin Jurkschat, Amadeu M.V.M. Soares, Susana Loureiro,