Table 1 Randles circuit fittings.

From: Electrochemical aptasensor for 2-amino-2-thiazoline-4-carboxylic acid (ATCA), a metabolite for cyanide poisoning

Electrode

Rs (Ω)

Rct (Ω)

CPE(µM)

Chi-squared(X2)

Bare SPCE

372

2600

2.31

3.23 × 10−2

GO/SPCE

379

24.7

52.8

5.93 × 10−6

Apt46/GO/SPCE

373

40.4

10.9

6.95 × 10−4

ET/Apt46/GO/SPCE

377

32.1

6.69

6.62 × 10−5

ATCA/ET/Apt46/GO/SPCE

372

27.0

7.93

1.48 × 10−5

  1. Apt aptamer, CPE constant phase element, GO graphene oxide, ET ethanolamine, SPCE screen printed carbon electrode.
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