PubMed_ArguminSci  

PubMed:27839994 JSONTXT 8 Projects

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Id Subject Object Predicate Lexical cue
T1 142-265 DRI_Background denotes ZnO nanoparticles (ZnO-NPs) are emerging contaminants that raise the concerns of potential risk in the aquatic environment.
T2 266-371 DRI_Background denotes It has been estimated that the environmental ZnO-NPs concentration is 76 μg/l in the aquatic environment.
T3 372-536 DRI_Outcome denotes Our aim was to determine the aquatic toxicity of ZnO-NPs with chronic exposure at environmentally relevant concentrations using the nematode Caenorhabditis elegans.
T4 537-747 DRI_Background denotes Two simulated environmentally relevant mediums-moderately hard reconstituted water (EPA water) and simulated soil pore water (SSPW)-were used to represent surface water and pore water in sediment, respectively.
T5 748-856 DRI_Outcome denotes The results showed that the ZnO-NPs in EPA water has a much smaller hydrodynamic diameter than that in SSPW.
T6 857-1137 DRI_Background denotes Although the ionic release of Zn ions increased time-dependently in both mediums, the Zn ions concentrations in EPA water increased two-fold more than that in SSPW at 48 h and 72 h. The ZnO-NPs did not induce growth defects or decrease head thrashes in C. elegans in either media.
T7 1138-1340 DRI_Background denotes However, chronic exposure to ZnO-NPs caused a significant reduction in C. elegans body bends in EPA water even with a relatively low concentration (0.05 μg/l); similar results were not observed in SSPW.
T8 1341-1487 DRI_Approach denotes Moreover, at the same concentrations (50 and 500 μg/l), body bends in C. elegans were reduced more severely in ZnO-NPs than in ZnCl2 in EPA water.
T9 1625-1872 DRI_Outcome denotes Our results provide evidences that chronic exposure to ZnO-NPs under environmentally relevant concentrations causes metabolic and locomotive toxicities implicating the potential ecotoxicity of ZnO-NPs at low concentrations in aquatic environments.