Detection and Quantification of Ammonia as the Ammonium Cation in Human Saliva by ¹H NMR: A Promising Probe for Health Status Monitoring, with Special Reference to Cancer.

The 1 H NMR profiles shown in Figure 6 a display results acquired from these experiments, which clearly demonstrate highly significant decreases in TSP-normalised NH 4 + ions’ 1 H NMR signal intensities up to 90 min following this single oral rinsing protocol, with a very substantive reduction being observed after a further 2 min.

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