DPV of the response of the rGO/IL/Chi electrode to 30 ng/ml cTnI in the potential range of 0.5 to 1.0 V with 4 mV incremental potential, 50 mV amplitude, 0.05 s pulse width, 0.0167 sample width, and 0.2 s pulse period
(a) Original curve; (b) Self-corrected curve