Voltammetric Determination of Anethole on La₂O₃/CPE and BDDE

Figure 8

SEM image of the surface: (a) nondoped carbon paste, magnification 1000x; (b) nondoped carbon paste, 10,000x; (c) carbon paste doped by 20% of La₂O₃ (w/w), 1000x; (d) carbon paste doped by 20% of La₂O₃ (w/w), 10,000x.

(a)

(b)

(c)

(d)