Right, so the question is can these machines detect volumes of anything in high concentration....and identify them?
I would be very impressed....I mean, obvious explosives (C-4, Nitro) would be a given. What about H2O2 in high concentration?
Would a flag go up?
Probably not at this time. H2O2 degrades into water and oxygen. Which is why peroxide bubbles when you put it on a cut. But the addition of high oxygen can make things burn very fast. Concentrated hydrogen peroxide is a very nasty thing. You can drop a piece of paper into it, and it will burn.