| 초록 |
Terrorist groups are now the biggest threat for using chemical weapons. Among chemical agents, nerve agents have been found to be used for a long time. For example, Sarin was used by the Aum Shinrikyo cult in Japan in the mid-1990s. It was first used in Matsumoto in 1994 and killed seven and injured over 600. The second occurrence was in the Tokyo subway in 1995, which killed 12 people and injured more than 5000. This cult had also used VX for the assassination of important political leaders. In this study, we explored evaporation and degradation of the nerve agents, GD [O-Pinacolyl methylphosphonofluoridate] and VX [O-ethyl S-2-(N, N-diisopropylamino)ethyl methylphosphonothioate] on common urban materials including sand, soil, and concrete. Concentration profiles of the agent vapor were obtained using a laboratory-sized wind tunnel and thermal desorber in conjunction with gas chromatography (GC). Degradation products were analyzed using 31P solid state magic angle spinning NMR and GC. |
