SSSAJ Journal of Natural Resources and Life Sciences Education
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Fig. 4 Liquid-phase ACOUSTIC 15N nuclear magnetic resonance (NMR) spectra (nuclear Overhauser enhancement retained) of Suwannee River fulvic acid (SRFA) (a) reacted with 15NH2OH, (b) reacted with Na15NO2 at pH 3, and (c) reacted with Na15NO2 at pH 6





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