Metal-doping of nanoplastics enables accurate assessment of uptake and effects on Gammarus pulex.

ABSTRACT: Because of the difficulty of measuring nanoplastics (NP), the use of NPs doped with trace metals has been proposed as a promising approach to detect NP in environmental media and biota. In the present study, the freshwater amphipod Gammarus pulex were exposed to palladium (Pd)-doped NP via natural sediment at six spiking concentrations (0, 0.3, 1, 3, 10 and 30 g plastic per kg of sediment dry weight) with the aim of assessing their uptake and chronic effects using 28 days standardized single species toxicity tests. NP concentrations were quantified based on Pd concentrations measured by ICP-MS on digests of the exposed organisms and faecal pellets excreted during a post-exposure 24 hour depuration period. Additionally, NP concentrations were measured in sediments and water to

SUBMITTER: Redondo-Hasselerharm PE 

PROVIDER: S-EPMC8211321 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature