A New Sensitive Sensor for Simultaneous Differential Pulse Voltammetric Determination of Codeine and Acetaminophen Using a Hydroquinone Derivative and Multiwall Carbon Nanotubes Carbon Paste Electrode

<div>(a) and (b) show differential pulse voltammograms of HTP-MWCNT-CPE in a 0.15 M phosphate buffer solution (pH 7.0) containing different concentrations of codeine. The numbers of 1–19 and 20–34 correspond to 0.2–31.4 <i>μ</i>M and 34.1–844.7 <i>μ</i>M of codeine, respectively. Insets show the plots of electrocatalytic peak currents as a function of codeine concentrations in the ranges of 0.2–31.4 <i>μ</i>M and 34.1–844.7 <i>μ</i>M, respectively.</div>

International Journal of Analytical Chemistry

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Figure 5

Figure 5: A New Sensitive Sensor for Simultaneous Differential Pulse Voltammetric Determination of Codeine and Acetaminophen Using a Hydroquinone Derivative and Multiwall Carbon Nanotubes Carbon Paste Electrode 

Figure 5 | A New Sensitive Sensor for Simultaneous Differential Pulse Voltammetric Determination of Codeine and Acetaminophen Using a Hydroquinone Derivative and Multiwall Carbon Nanotubes Carbon Paste Electrode 