TATP is difficult to detect with most other technologies.

Having a charge enables you to not only detect molecules but also to measure their masses, which you can't do with neutral molecules.

We have shown that the spectrum is pretty clean and that there are almost no fragment ions, which was unexpected.

The two most important aspects are that this can be done at atmospheric pressure and just by heating a sample, a procedure which is much simpler than existing ionization methods using a laser or high-energy beam. The method does not require a high-voltage power source.

It's one thing to detect a substance, but it's another thing to be absolutely certain of its composition, which is what you get with mass spectrometry.