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. 2018 Jan 24;18(2):328. doi: 10.3390/s18020328

Figure 5.

Figure 5

(A) Chronoamperometry experiments at the paper-based probe in which nitrite or chlorate (10 mM) is added in different sequences to the paper-based probe over the course of the experiment. Potential of the working electrode = −0.7 V vs. Ag/AgCl. (B) Cyclic voltammograms of the paper-based probe with the addition of 10 mM sodium nitrite. (C) Addition of 10 mM sodium nitrite after the addition and CV equilibration of 10 mM chlorate. (D) Addition of 10 mM potassium chlorate after the addition and CV equilibration of 10 mM sodium nitrite. For (B–D), scan rate = 100 mV/s.