A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode

<table>The response current of a screen-printed carbon electrode modified with L-cysteine assembled on gold nanoparticles to different copper ion concentrations. Inset: the linear response range of the sensor.</table>

Journal of Sensors

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Figure 6

Figure 6: A Disposable Copper (II) Ion Biosensor Based on Self-Assembly of L-Cysteine on Gold Nanoparticle-Modified Screen-Printed Carbon Electrode 