Prototype Method Detects and Measures Elusive Hazards
Tuesday, September 8, 2009 - 17:07
in Physics & Chemistry
(PhysOrg.com) -- A chemist at the National Institute of Standards and Technology has demonstrated a relatively simple, inexpensive method for detecting and measuring elusive hazards such as concealed explosives and toxins, invisible spoilage in food or pesticides distributed in soil by wind and rain. The prototype method is more sensitive than conventional techniques for detecting traces of these materials, which are polar -like water molecules, having distinct electrically positive and negative ends -and do not readily evaporate.