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Fig. 4 | Journal of Analytical Science and Technology

Fig. 4

From: Electrochemical behavior of anticancer drug 5-fluorouracil at carbon paste electrode and its analytical application

Fig. 4

Cyclic voltammograms of 1.0 × 10−4 M 5-FU in 0.2 M buffer solution at pH 7.0 at scan rates of (a) blank, (b) 0.01, (c) 0.02, (d) 0.03, (e) 0.04, (f) 0.05, (g) 0.06, (h) 0.07, (i) 0.08, (j) 0.10, (k) 0.12, (l) 0.14, (m) 0.16, (n) 0.18, (o) 0.20, (p) 0.24, (q) 0.28, (r) 0.32, and (s) 0.36 Vs−1. (A) Dependence of peak current on the scan rate (y = 3.9616x + 0.2793: R 2 = 0.9884). (B) Dependence of logarithm of peak current on logarithm of scan rate (y = 0.571x + 0.4405: R 2 = 0.9939). (C) Relationship between peak potential and logarithm of scan rate (y = 0.0457x + 1.1984: R 2 = 0.9877)

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