Forensic Investigation of Some Peroxides Explosives

 

Vyacheslav Viktorovich KUZMIN,
Mikhail Yur`evich SOLOV`EV and Yurii Borisovich TUZKOV

The Forensic Science Center of Ministry of Internal Affairs,
5 Zoi i Aleksandra Kosmodemianskikh St., 125131 Moscow, Russia

Georgii D. KOZAK

Mendeleev University of Chemical Technology of Russia,
9 Miusskaya Sq., 125190 Moscow, Russia


Abs t rac t : Some of pe roxide s : t r i a c e tone t r ipe roxide (TATP) ,
hexamethylenetriperoxidediamine (HMTD) have been used recently as
“irregular” explosives for delinquency and international terrorism purposes. The
intimate knowledge of properties and methods of analysis of these substances
is necessary for experts. Forensic investigations of some peroxides explosives:
triacetonetriperoxide (TATP) and hexamethylenetriperoxidediamine (HMTD)
were carried out in this work. The detonation process of peroxides initiation
by means of pyroxylin layer ignition was investigated, velocity of detonation
at apparent density (ρHMTD = 0.38 g/cm3, ρTATP = 0.47 g/cm3) was measured by
means of a Russian fotoregister GFR-3. These data were compared with literature
detonation velocity values that had been measured at larger densities. The values of
detonation velocities complement each other rather well, linear dependencies of D
vs. ρ found at densities ρ = 0.35-1.2 g/cm3. The high sensitivity of the investigated
analytical methods, that were applied (10-5-10-8 g) facilitate the determination of
possible times for finding traces of TATP after an explosion. Time t = 6 hours
after explosion is the critical time for finding peroxides traces of TATP on a metal
surface by means of analytical methods used in this work.

Keywords: peroxide, methods of analysis, traces, volatilize, detonation

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