Toxicidade aguda de nanopartículas de prata (NpAg) em náuplios de Artemia salina

Abstract

Nanoparticles are between 1 and 100 nm in size, providing new properties compared to the original material. Silver nanoparticles (NpAg) are widely used in everyday products such as drugs, paints, cosmetics, and sunscreens. In view of this, this study proposes to analyze the agglomeration, toxicity, and morphological effects of such a particle in the animal model of Artemia salina, through particle agglomeration analysis by DLS (Dynamic light scattering), as well as exposure experiment, and imaging by both optical and scanning electron microscopy. With the conclusion of the experiments, it can be seen that the particle has a uniform aggregation independent of the medium, and a greater number of dead individuals were observed in nauplii stage 2, and there were no morphological changes, only a weakening of the external coating of the animal. This allowed the verification that individuals with a complete digestive system are more affected by the silver nanoparticle, possibly due to its ingestion, and that the concentration used does not influence the agglomeration of the particle.