TABLE 1.

Mass balance for [14C]TNT, [14C]RDX, and [14C]HMXa

Solution (%)% Radioactivity recovered after treatment with:
[14C]TNT (25 mg liter−1)[14C]RDX (20 mg liter−1)[14C]HMX (2.5 mg liter−1)
CellsControlCellsControlCellsControl
Final93.3 ± 3.4103.412.8 ± 1.5104.412.5 ± 1.398.3
Bacterial cell6.3 ± 1.30.21.0 ± 0.20.00.9 ± 0.20.2
Mineralization0.7 ± 0.40.658.0 ± 3.01.262.0 ± 3.91.1
Mass balance100.3 ± 4.7104.271.8 ± 4.7105.675.4 ± 5.499.6
  • a [14C]TNT, [14C]RDX, and [14C]HMX were treated with Methylobacterium sp. strain BJ001 growing in LB liquid medium after 55 days of exposure. Radioactivity is expressed as a percentage of the initial dose. Control experiments were carried out with noninoculated flasks. Results are presented as means ± standard deviations.