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Fig. 1. The 2H nuclear magnetic resonance (NMR) spectra of different aromatic compounds and deuterated water at natural abundance in aqueous soil suspensions at pH 7. (a) d6–benzene (downfield-shifted). (b) d5–fluorobenzene (two peaks resolved for {alpha}, the most downfield-shifted, and ß). (c) d8–toluene (one peak resolved for -C6D5 as the most downfield-shifted; -CD3 as the most upfield-shifted).