Issue Date: September 17, 2012
Nanoparticles Sense Ultralow Levels Of Toxic Ions
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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