Fig. 4From: Electrochemical behavior of anticancer drug 5-fluorouracil at carbon paste electrode and its analytical applicationCyclic 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)Back to article page