Trophic Transfer and Toxicity of (Mixtures of) Ag and TiO₂ Nanoparticles in the Lettuce-Terrestrial Snail Food Chain.

ABSTRACT: The increasing application of biosolids and agrochemicals containing silver nanoparticles (AgNPs) and titanium dioxide nanoparticles (TiO₂NPs) results in their inevitable accumulation in soil, with unknown implications along terrestrial food chains. Here, the trophic transfer of single NPs and a mixture of AgNPs and TiO₂NPs from lettuce to snails and their associated impacts on snails were investigated. Both AgNPs and TiO₂NPs were transferred from lettuce to snails with trophic transfer factors (defined as the ratio of the Ag/Ti concentration in snail tissues to the Ag/Ti concentration in lettuce leaves) of 0.2-1.1 for Ag and 3.8-47 for Ti. Moreover, the majority of Ag captured by snails in the AgNP-containing treatments was excreted via feces, whereas more

SUBMITTER: Wu J 

PROVIDER: S-EPMC8697561 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature