Abstract: Direct Determination Method for Thermic Unstable Mixture by MS/MSDeng Lin;Ni Jihua;Chen Jianqing(Beijing Institute of Technoiogy,Beijing 100081,China) Received Abstract:Direct analysis of mixed explosive involving thermic unstable compounds by MS/MS was explored.With the help of standard compounds,we identified the composition of mixture.It is not necessary to separate and treat mixed explosive.Keywords:MS/MS,mixed explosive,direct analysis