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Web Date: February 15, 2011

Listening For Lead

Environmental Analysis: In new CD-based detection system, audio plays when a sample contains lead
Department: Science & Technology, Government & Policy
News Channels: Environmental SCENE
Keywords: CD, lead, DNA, nanoparticle, silver stain, environment

MP3s may soon outsell compact discs, but the CD drive has gained a new job: reading lead levels. Researchers have created a CD-based assay as an inexpensive and rapid field test for analyzing lead in drinking water and other environmental samples (Anal. Chem., DOI: 10.1021/ac103177w).

Lead is a neurotoxic metal. Existing techniques, such as reversed-phase high-pressure liquid chromatography, can measure lead concentrations at very . . .

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