Figure 4 | Scientific Reports

Figure 4

From: Modified electrode decorated with silver as a novel non-enzymatic sensor for the determination of ammonium in water

Figure 4

(A) peak current values of a concentration 100 µM of NH4+ into a solution of 0.1 M Na2SO4 at amplitude of 25 mV and step potential of 1 mV at different frequencies from 5 to 25 Hz. (B) peak current values of a concentration of 100 µM of NH4+ into a solution of 0.1 M Na2SO4 at frequency of 10 Hz and step potential of 1 mV at different square wave amplitude from 5 to 30 mV. (C) peak current values of a concentration of 100 µM of NH4+ at amplitude of 25 mV, frequency of 10 Hz and step potential of 1 mV at different concentrations of Na2SO4 from 0.01 to 0.2 M. Error bar n = 5.

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