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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Faraday Discuss. 2018 Oct 1;210(0):9–28. doi: 10.1039/c8fd00134k

Figure 3.

Figure 3.

Schematic of the measurement of fM concentrations of metal ions, Mn+ (e.g., Co2+, Ni2+, Pb2+), through electrocatalytic amplification. Oxidation of Mn+ to metal oxides (MOx) is accompanied by anodic spikes corresponding to electrocatalytic conversion of reactants, R, to products, P; e.g., water oxidation. Figure adapted from reference 30.