Mechanism Study on DMMP Decontaminated by Strong Ionization Discharging Gas

Dimethyl methylphosphonate (DMMP), which acted as the simulant of nerve warfare agents, was degraded by strong ionization discharge gas. Experimental results show that DMMP could be degraded rapidly by the strong ionization discharge gas, and the total organic carbon of the solution decreased signifi- cantly. Moreover, the free radical accelerant and inhibitors significantly influenced the degradation efficien- cies of DMMP. Free radicals were the most important oxidants for the DMMP degradation reaction in this system. Hydroxyl radical could attack CH3—P, P—OCH3 and O—CH3 groups of DMMP to start a degrada- tion reaction. The analysis of byproducts indicated that phosphate esters, methyl phosphoric acid, 3 PO - and CO2 etc. were formed after the treatment. Furthermore, DMMP would be probably mineralized. Finally, four