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. 2015 Jul 26;24(1):72–82. doi: 10.1016/j.jfda.2015.06.006

Fig. 7.

Fig. 7

Amperometric responses at a rotating reactive blue 19 multiwalled carbon nanotube-modified glassy carbon electrode (rotation speed 2000 rpm) held at −300 mV in buffer solution (pH = 7) for successive addition of H2O2 (a–e, 20–220μM) and 1mM of (f) ascorbic acid, (g) uric acid, (h) glucose, (i) dopamine, (j) oxalic acid, (k) NaNO3, (l) Mg(NO3)2, (m) KCl, (n) KI, (○) NaNO2 and (p) Na2SO4.