Clean Technology 2009

A Simple Method to Detect Water Impurities

P. Caldwell
Drexel University, US

Keywords: Water Testing, Thin Film, Heavy Metals


An inexpensive, rapid, color-based, “dipstick” test to determine the concentration of heavy metal ions in various water sources. This “dipstick” has individual panels of sensitive nano-scale films that can be tuned to change color in response to different aqueous heavy metal ions.
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