The results of the EIS approach for carbon steel corrosion in 1 M hydrochloric acid at 25 °C with various quantities of Eruca sativa seeds extract.
| Conc., (g L−1) | R ct, Ω cm−2 | R S, Ω cm−2 | Y 0 × 106, μΩ−1 Sn cm−2 | n × 103 | C dl × 104, F cm−2 | θ | % I.EEIS | χ 2 |
|---|---|---|---|---|---|---|---|---|
| Blank | 31.2 ± 1.9 | 1.66 ± 0.015 | 440.6 ± 7.9 | 732 ± 0.003 | 1.860 | — | — | 0.000301 |
| 0.05 | 273.7 ± 2.44 | 1.62 ± 0.014 | 369.6 ± 6.3 | 743.8 ± 2.47 | 1.670 | 0.886 | 88.6 | 0.000404 |
| 0.10 | 308.8 ± 2.80 | 1.80 ± 0.017 | 214.4 ± 3.9 | 757.0 ± 2.50 | 0.897 | 0.898 | 89.8 | 0.000277 |
| 0.15 | 319.2 ± 2.34 | 1.80 ± 0.018 | 145.0 ± 2.5 | 799.0 ± 2.49 | 0.742 | 0.902 | 90.2 | 0.000245 |
| 0.20 | 362.7 ± 2.69 | 1.70 ± 0.011 | 132.2 ± 2.4 | 814.9 ± 2.27 | 0.694 | 0.913 | 91.3 | 0.000349 |
| 0.25 | 455.1 ± 3.40 | 1.20 ± 0.012 | 138.0 ± 2.2 | 801.2 ± 2.14 | 0.599 | 0.931 | 93.1 | 0.000400 |
| 0.3 0 | 578.2 ± 4.60 | 1.59 ± 0.015 | 116.5 ± 1.9 | 796 ± 2.30 | 0.584 | 0.946 | 94.6 | 0.000272 |