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Web Date: August 16, 2011

Method Could Resolve Nanosilver’s Cloudy Toxicity Picture

Nanomaterials: Cloud point extraction could help distinguish between silver nanoparticles and silver ions
Department: Science & Technology
News Channels: Analytical SCENE, Environmental SCENE
Keywords: nanomaterials, silver, ions, cloud point extraction, toxicity

For toxicologists, silver nanoparticles present a conundrum: Does their toxicity in the environment stem from the nanoparticles themselves or from the silver ions that slough off the particles? Measuring these different forms of silver can be difficult. Now researchers have developed a method that can distinguish the two in simple lab samples (Anal. Chem., DOI: 10.1021/ac201086a).

Manufacturers add silver nanoparticles to consumer products such as clothing to exploit the particles’ antimicrobial properties. But the . . .

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