The effects of dietary exposure to Magnéli phase titanium suboxide and titanium dioxide on rainbow trout (Oncorhynchus mykiss).

Magnéli phase titanium suboxides (Magnéli TiO) are promising, novel materials with superior properties compared to TiO, they are substoichiometric titanium oxides with the chemical formula TiO (where n ≥ 1). In this study, for the first time, subchronic effects of dietary intake of Magnéli TiO were evaluated and compared with TiO particles of similar size, in concentrations 0.1% and 0.

Effect of Gold Nanoparticles and Ions Exposure on the Aquatic Organisms.

An increase in the production and usage of gold nanoparticles (AuNPs) triggers the necessity to focus on their impact on ecosystems. Therefore, the purpose of this study was to investigate the acute toxicity of AuNPs and ionic gold (Au (III)) to organisms representing all trophic levels of the aquatic ecosystem, namely producers (duckweed Lemna minor), consumers (crustacean Daphnia magna, embryos of Danio rerio) and decomposers (bacteria Vibrio fischeri). The organisms were exposed according to a standardized protocol for each species and endpoints.

The effect of silver nanoparticles and silver ions on zebrafish embryos (Danio rerio).

Objectives: The aim of this study was to establish and evaluate the mortality rate, hatching rate and observe the presence of sublethal changes in zebrafish embryos after exposure to silver ions and nanoparticles.

Methods: Tests were conducted on newly fertilized zebrafish embryos, according to the modified OECD guideline 236, using a semistatic method and 96 hour incubation time. Silver nitrate and two different silver nanoparticles, stabilized with 0.