Higher silver bioavailability after nanoparticle dietary exposure in marine amphipods

Environ Toxicol Chem. 2019 Apr;38(4):806-810. doi: 10.1002/etc.4359. Epub 2019 Feb 19.

Abstract

On release into surface waters, engineered silver nanoparticles (AgNPs) tend to settle to sediments and, consequently, epibenthic fauna will be exposed to them through diet. We established Ag uptake and accumulation profiles over time in the hemolymph of a marine amphipod fed with a formulated feed containing AgNPs or AgCl. Silver bioavailability was higher in organisms exposed to AgNPs, indicating that the nanoparticles pose a higher risk of toxicity compared to similar concentrations of AgCl. Environ Toxicol Chem 2019;38:806-810. © 2019 SETAC.

Keywords: Accumulation; Hemolymph; Metal uptake; Parhyale hawaiensis; Silver; Silver nanoparticle.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amphipoda* / drug effects
  • Amphipoda* / metabolism
  • Animals
  • Biological Availability
  • Dietary Exposure / analysis*
  • Hemolymph / chemistry
  • Metal Nanoparticles / toxicity*
  • Silver / metabolism
  • Silver / toxicity*
  • Silver Compounds / metabolism
  • Silver Compounds / toxicity
  • Water Pollutants, Chemical / metabolism
  • Water Pollutants, Chemical / toxicity*

Substances

  • Silver Compounds
  • Water Pollutants, Chemical
  • Silver
  • silver chloride