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. 2019 Apr 16;2019:5381031. doi: 10.1155/2019/5381031

Figure 3.

Figure 3

Differential pulse voltammograms of NAP using carbon paste electrodes modified in bulk and surface with different nanomaterials (a, c) dissolved in NaOH and (b, d) dissolved in methanol. The scan rate employed was 50 mV·s−1.