Nanoparticles Sense Ultralow Levels Of Toxic Ions | Chemical & Engineering News
 
 
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Volume 90 Issue 38 | p. 27 | Concentrates
Issue Date: September 17, 2012

Nanoparticles Sense Ultralow Levels Of Toxic Ions

Sensor coated with tiny, striped particles can detect as few as 600 methylmercury cations per mL of water
Department: Science & Technology
News Channels: Nano SCENE, Materials SCENE, Environmental SCENE, Analytical SCENE
Keywords: water analysis, pollution, heavy metals, methylmercury, nanoparticles, sensors

An electronic sensor coated with patterned nanoparticles can detect concentrations of the toxic ion methylmercury down to attomolar (10–18 M) levels in water (Nat. Mater., DOI: 10.1038/nmat3406). This detection limit—about 600 methylmercury cations per mL of solution—is far below what other analytical methods, such as atomic fluorescence spectroscopy, can achieve, according to the research team that designed the . . .

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