Superoxide electrochemical sensors and biosensors: principles, development and applications - Electrochemical Sensors, Biosensors and Their Biomedical Applications - page 151

0.4

1

a
b 0.2

c

0

400 600 800

0

0.1

l /nm

1

300 500 0.5 0 0.5

E / V vs Ag/AgCl

(a) /nm (b)

FIGURE 6.2 Panel A, UV-visible spectrum of the reconstituted SOD. The inset shows the spectrum
of CuSO 4 solution (0.56 mM). Panel B, CVs obtained at a cysteine-modifi ed Au electrode in 25 mM phos-
phate buffer containing 0.56 mM native Cu, Zn-SOD (curve a), 0.56 mM CuESOD (curve b), and 0.56 mM
EZnSOD (curve c) at 100 mV s 1 . (Reprinted from [98], with permission from Elsevier.)

1

b

a

0

1

0.5 0 0.5

E / V vs Ag/AgCl

FIGURE 6.3 CVs obtained at a cysteine-modifi ed Au electrode in 25 mM phosphate buffer containing
0.56 mM reconstituted SOD (curve a) or 0.56 mM native Cu, Zn-SOD (curve b). Potential scan rate, 100 mV s 1 .
(Reprinted from [98], with permission from Elsevier.)