Hexahydro-1,3,5-trinitro-1,3,5-triazine translocation in poplar trees

This article evaluates the translocation of the explosive hexahydro-1,3,5-t rinitro-1,3,5-triazine (RDX) in hybrid poplar trees (Populus deltoides X ni gra, DN34) grown in hydroponic solutions. Mass balances with [U-C-14]RDX we re used to assess RDX translocation. Up to 60% of the RDX uptaken by the tr ee accumulated in leaf tissues. Analysis of plant extracts by highperforman ce liquid chromatography equipped with radiochemical detection indicated th at RDX was not significantly transformed during exposure periods of up to 7 d. The bioaccumulation of RDX may be an important concern for phytoremedia tion efforts.