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. 2022 Jan 21;12(5):2959–2971. doi: 10.1039/d1ra08855f

EIS parameters for X80 CS corrosion in 0.5 M H2SO4 solution alone and with various concentrations of parsley oil at 298 K.

Oil. conc. (ppm) R s (Ω cm2) R ct (Ω cm2) C dl (μF cm−2) P (EIS)%
0.00 2.74 50 183 —
50 1.74 170 151 70.58
150 1.68 263 143 80.98
250 1.63 344 133 85.46
350 1.66 571 128 91.24
450 1.52 964 119 94.81