Smart paper detects toxins in water

A strip of paper infused with carbon nanotubes can quickly and inexpensively detect a toxin produced by algae in drinking water.

Uni of Michigan: http://www.ns.umich.edu/htdocs/releases/story.php?id=7481

Paper reference

Research published online in Nano Letters

Wang et al. Simple, Rapid, Sensitive, and Versatile SWNT-Paper Sensor for Environmental Toxin Detection Competitive with ELISA. Nano Letters, 2009; 9 (12): 4147 DOI: 10.1021/nl902368r