Shape-Dependent Toxicity of Silver Nanoparticles on Freshwater Cnidarians.

ABSTRACT: Silver nanoparticles (AgNPs) are increasingly used in various consumer products, leading to their inadvertent release in aquatic ecosystems. The toxicity of AgNPs could be associated with the leaching of ionic Ag but also with the size, shape and surface properties. The purpose of this study was to test the null hypothesis that toxicity of AgNPs was independent of shape in the invertebrate Hydra vulgaris. The hydranths were exposed to increasing concentrations of ionic Ag and AgNPs of three different shapes (spherical, cubic and prismatic) with the same size and coating (polyvinylpyrrolidone). The data revealed that between 68% and 75% of total Ag remained in solution after the 96 h exposure period, while 85-90% of ionic Ag remained in solution. The 96 h lethal concentration (LC

SUBMITTER: Auclair J 

PROVIDER: S-EPMC9503847 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature