Research Article

A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles

Figure 5

Linear relationship of of DA oxidation/reduction and scan rate at the MCPE/MNP. Inset is the cyclic voltammograms of the MCPE/MNP in PBS, DA free, pH 7.0, and 0.1 M after 30 min pre-concentration in PBS (pH 7.0) containing 1 mM DA with different scan rates ((a)–(g): 50, 100, 150, 250, 300, 450, and 500 mV s−1).
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