Application of L-DOPA modified carbon nanotubes as a bifunctional electrocatalyst for simultaneous determination of ascorbic acid, adrenaline, acetaminophen and tyrosine

Differential pulse voltammograms of L-DOPA multi-wall carbon nanotube modified glassy carbon electrode in a 0.1 M phosphate buffer solution (pH 5.0) containing different concentrations of ascorbic acid, adrenaline, acetaminophen and tyrosine.191