Effect of protein corona on silver nanoparticle stabilization and ion release kinetics in artificial seawater (CROSBI ID 237716)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Levak, Maja ; Burić, Petra ; Dutour Sikirić, Maja ; Domazet Jurašin, Darija ; Mikac, Nevenka ; Bačić, Niko ; Drexel, Roland ; Meier, Florian ; Jakšić, Željko ; Lyons, Daniel Mark
engleski
Effect of protein corona on silver nanoparticle stabilization and ion release kinetics in artificial seawater
In parallel with the growing use of nanoparticle containing products, their release into the environment over the coming years is expected to increase significantly. With many large population centers located in near- coastal areas, and increasing evidence that various nanoparticles may be toxic to a range of organisms, biota in estuarine and coastal waters may be particularly vulnerable. While size effects may be important in cases, silver nanoparticles have been found to be toxic in large part due to their release of silver ions. However, there is relatively little data available on how nanoparticle coatings can affect silver ion release in estuarine or marine waters. We have found that albumin, as a model for biocorona-forming macromolecules which nanoparticles may encounter in wastewater streams, stabilizes silver colloids from agglomeration in high salinity marine waters by electrosteric repulsion for long time periods. A minimum mass ratio of about 130 for albumin:silver nanoparticles (40 nm) was required for stable dispersion in seawater. Increasing albumin concentration was also found to reduce dissolution of nanoparticles in seawater with up to 3.3 times lower concentrations of silver ions noted. Persistent colloids and slow sustained ion release may have important consequences for biota in these environmental compartments.
marine ; estuarine ; wastewater ; nanoparticle ; silver ; biocorona ; stability ; toxicity
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Podaci o izdanju
51 (3)
2017.
1259-1266
objavljeno
0013-936X
1520-5851
10.1021/acs.est.6b03161