The binding of TNT to a soil and soil components is studied with ~(2)H MAS NMR. This NMR technique clearly shows different interactions for deuterated TNT with soil, quartz, and clays. Basically, this NMR method relies on the well-defined ~(2)H MAS NMR characteristics of a deuterated methyl group attached to an aromatic ring. Stationary rings and rings executing 2- or 3-fold jump motions all yield different NMR spectra. The technique has good sensitivity; these studies were conducted at a TNT loading of 22 mmol/kg. For the soil sample studied, TNT showed binding similar to a TNT/K10-montmorillonite sample.
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