title: Ag nanoparticles: size- and surface-dependent effects on model aquatic organisms and uptake evaluation with NanoSIMS.
abstract: This study aims to assess the effects of Ag particles synthesised by a chemical (Ag 20, 200 nm) and biological method (Ag 23, 27 nm) in aquatic organisms: the bacterium Vibrio fischeri, the alga Desmodesmus subspicatus and the crustacean Daphnia magna. Ag particles exerted toxic effects in all organisms studied with Ag particles 23 nm being the most potent. Although soluble Ag was released in all media, the differences between the tested Ag particles still cannot be explained solely based on soluble Ag. NanoSIMS analysis performed with D. magna showed that apart from their localisation in the gut lumen, Ag 200 nm and Ag NPs 23 nm seemed to pass through the epithelial barrier as well. Ag NPs 23 nm localised in specific areas seemed to be within the ovaries. This study strengthens the argument that size, method of synthesis as well as surface chemistry may affect the uptake and toxic effects of Ag NPs.
authors: Department of Environment and Agrobiotechnologies, Centre de Recherche Public-Gabriel Lippmann , 41 rue du Brill, Belvaux , Luxembourg.
authors: Anastasia
authors: A
authors: Georgantzopoulou
authors: Yekkuni L
authors: YL
authors: Balachandran
authors: Philipp
authors: P
authors: Rosenkranz
authors: Maria
authors: M
authors: Dusinska
authors: Anna
authors: A
authors: Lankoff
authors: Maria
authors: M
authors: Wojewodzka
authors: Marcin
authors: M
authors: Kruszewski
authors: Cédric
authors: C
authors: Guignard
authors: Jean-Nicolas
authors: JN
authors: Audinot
authors: Shanmugam
authors: S
authors: Girija
authors: Lucien
authors: L
authors: Hoffmann
authors: Arno C
authors: AC
authors: Gutleb
mesh_terms: D048908:Aliivibrio fischeri / Q000187:drug effects* / Q000254:growth & development; D000818:Animals; D003621:Daphnia / Q000187:drug effects* / Q000254:growth & development; D053768:Metal Nanoparticles / Q000032:analysis / Q000737:chemistry / Q000633:toxicity*; D010316:Particle Size; D044444:Scenedesmus / Q000187:drug effects* / Q000254:growth & development; D012834:Silver / Q000032:analysis / Q000737:chemistry / Q000633:toxicity*; D012995:Solubility; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical; D012834:Silver