The selectivity, stability and reproducibility of this prepared bio- sensor have been explored under optimal conditions. As shown in Fig. 5C, when 0.1 mg/mL of BSA, human serum albumin (HAS) and cytochrome C (Cyt C) are used to replace Con A, the ECL intensity has no obvious decline like the blank (no Con A). However, the luminous intensity of the sensors rapidly decreases after the Con A (0.1 ng/mL) or the mixture is added. The test indicates that the constructed sensor has excellent selectiv
