Investigation of Detoxification Reaction of Phosphoramidothioates by Nanosize Aluminium Oxide

organo phosphorus compounds have been applicable in different field(e.g. pesticide, chemical warfar agent, pharmacy, … ).the higher concentration of them have been highly effected human health and environment, therefore decontamination of these compounds are very necessary for enhancing life.The versatile materials for decontamination of this poisons are calcium hypochlorite, DS2 , HTH, C8 ,… , but this compounds are highly corrosive and heat of neutralization of them are not standard. The physical decontamination needs the high energy. So these procedures for decontamination are not economy. Inorganic oxides and hydroxides are have been used as reactive sorbents for the decontamination of organo phosphorus poison [1]. Wagner and co-workers also reported that these reactions were limited by the physical distribution of the agent through the column of oxide. A serious drawback to the use of dry powder sorbents is the long half-lives for detoxification when large droplets of the chemical agents are present. Therefore, in some situations, it is very important that a better mixing process be employed. One way to envision doing this is to use an organic solvent that dissolves the organic toxin and brings it quickly into contact with the powder sorbent. However, solvents must be chosen that do not deactivate the sorbent and that do dissolve and distribute the organic toxin. Indeed, some early work has shown that with the presence of solvents the physical distribution limits are removed [2, 3]. The recent search has been conducted by AP- Al2O3. The reason of this selection is that they had high reactive surface area and the heat of neutralization of them is less than common decontamination agent.