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November 21, 2016

Engineers design new lead detector for water

Mechanical engineer Junhong Chen and a team at the University of Wisconsin, Milwaukee (UWM), have developed what you might think of as a "canary in the coal mine" for lead in water. With support from NSF, they designed a sensor with a graphene-based nanomaterial that can immediately detect lead and other heavy metals. The new platform technology can be used for one-time testing of lead in tap water through a handheld device. The small sensors also can be integrated into water meters and purifiers, with the goal of continuous monitoring to prevent exposure to lead that could be introduced between the water treatment plant and the home. The team is now working with manufacturers, including A.O. Smith Corporation, Badger Meter Inc., Baker Manufacturing Company LLC and NanoAffix Science LLC, to put the sensors into use. In addition to real-time detection and continuous monitoring, this lead sensor system is a low cost way to mitigate lead contamination in water.

Credit: National Science Foundation

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