Figure 6 | Scientific Reports

Figure 6

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

Figure 6

(A) Ten square-wave voltammograms of 100 µM NH4+ on Ag/pAAQ/MWCNTs/CPE in a solution of 0.1 M Na2SO4 at a step potential of 1 mV, a square-wave frequency of 5 Hz, and a square-wave amplitude of 25 mV in a potential range of − 0.4–0.2 V. (B) Peak current values in mA for 10 measurements of 100 µM NH4+ with RSD (relative standard deviation) with a value of 9.93%.

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