Fig. 3. Degradation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX; 10 mg L^–1) in China Lake soil microcosms incubated under aerobic conditions. (A) Surface soil; (B) subsurface soil. Symbols: unamended soil, open circles; soil + glucose, solid triangles; soil + glucose + HgCl₂, open triangles; mineral salts medium + glucose, solid squares.