Table 1.
Kinetics parameters of CYN oxidation by Fenton process. (Initial CYN concentration ≈ 0.05 µM; H2O2 = 25 µM; Fe(II) = 62.5 µM; initial pH 5.0 ± 0.1; 30 min reaction).
| Kinetic Model | Replicate 1 | Replicate 2 b | Replicate 3 | Average | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| k a | T1/2 (min) | R2 | k a | T1/2 (min) | R2 | k a | T1/2 (min) | R2 | k a | T1/2 (min) | R2 | |
| Zero | 1.925 × 10−11 | 19.1 | 0.76 | 1.987 × 10−11 | 19.7 | 0.87 | 3.799 × 10−11 | 11.9 | 0.90 | 2.570 × 10−11 | 16.9 | 0.84 |
| First | 1.007 × 10−3 | 11.5 | 0.80 | 0.813 × 10−3 | 14.2 | 0.90 | 1.879 × 10−3 | 6.1 | 0.98 | 1.233 × 10−3 | 10.6 | 0.89 |
| Second | 6.435 × 104 | 5.9 | 0.73 | 3.748 × 104 | 9.5 | 0.87 | 13.390 × 104 | 2.3 | 0.87 | 7.858 × 104 | 5.9 | 0.82 |
| Third | 4.978 × 1012 | 2.6 | 0.60 | 1.934 × 1012 | 5.9 | 0.79 | 13.460 × 1012 | 0.6 | 0.72 | 9.219 × 1012 | 3.0 | 0.70 |
a k is the apparent pseudo-zero-order rate constant (M s−1), pseudo-first-order rate constant (s−1), pseudo-second-order rate constant (M−1 s−1), pseudo-third-order rate constant (M−2 s−1); b data showed in Figure 4.