Vil Mirzayanov is a Russian emigre to the U.S. and chemical weapons specialist who helped develop the poison believed to have been used in the attack in Britain on Sergei Skripal, a former colonel in the GRU, Russia’s military intelligence, and his daughter Yulia.
Mirzayanov spoke with VOA’s Russian service.
Q: You were involved in the development of unique Soviet chemical toxic substances of nerve agent, “Substance 33,” “A-232” and “?-234,” known today as “Novichok” (Newcomer). At the same time, you claim that no other country in the world except Russia has ever had such weapons. How were British investigators able to establish what kind of substance was used to poison Sergei Skripal?
Mirzayanov: To establish which chemical agent was used in this case, you need to have access to a powerful high-resolution mass spectrometer, in the library of which are the spectra of all known compounds. The sample taken is compared with those already known, and the computer indicates a spectrum with a 96 percent probability. That is, there can be no error here.
Source: Ex-Russian Chemical Weapons Specialist: Moscow Was Sure No One Would Find Poison