Detecting Hydrogen-Peroxide Explosives

On Wednesday, German police found stockpiles of concentrated hydrogen peroxide. The substance can be used to create a potent liquid explosive of the type used before in terrorist attacks, and which authorities have long feared could be used on airplanes. Technologies are currently being developed for detecting such explosives at airports. We wrote about one of these technologies last year. Recently, the Department of Homeland Security described in its monthly newsletter a method of detecting various liquids.