Table 3.

Impedance parameters of Q235 steel without and with 1000 mg/L ATL extract in different immersion times at 298 K.

Time	C	Rs	${\mathit{R}}_{\mathbf{f}}^{\mathbf{a}}$	${\mathit{R}}_{\mathbf{c}\mathbf{t}}^{\mathbf{b}}$	${\mathit{C}}_{\mathbf{f}}^{\mathbf{d}}$	n 1	${\mathit{C}}_{\mathbf{d}\mathbf{l}}^{\mathbf{e}}$	n 2	η	χ 2
(h)	(mg/L)	(Ω cm2)	(Ω cm2)	(Ω cm2)	(μF cm−2)		(μF cm−2)		(%)	10−4
2	0	1.3	2.5	16.4	366.4	1	158.5	0.69	-	8.4
	1000	1.4	37.9	978.0	12.0	1	0.96	0.67	98.1	4.7
12	0	1.3	2.2	14.2	441.8	1	170.4	0.72	-	1.7
	1000	1.4	43.4	1265.0	10.9	1	0.79	0.67	98.7	7.7
24	0	1.2	2.6	12.7	507.4	1	176.6	0.73	-	7.2
	1000	1.4	51.4	1462.0	0.94	1	0.57	0.67	99.0	7.0

^a The standard deviation varied between 3% and 7%. ^b The standard deviation varied between 4% and 8%. ^d The standard deviation varied between 3% and 5%. ^e The standard deviation varied between 4% and 6%.