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. 2019 Dec 3;9(4):139. doi: 10.3390/bios9040139

Figure 7.

Figure 7

Cyclic Voltammograms of Ty-biochar/SPE biosensor of scan rate study: comparison of cyclic voltammograms obtained with Ty/biochar/SPEs biosensors using 2 mM epinephrine solution (in 50 mM phosphate buffer + 10 mM KCl, pH 7.4).