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Voltammetric Nanostructure Based Sensor for Determination of Sudan I in Food Samples

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Figure

Figure 1. XRD patterns of as-synthesized CdO nanoparticle.
Figure 3. Current–pH curve for electrooxidation of 50 µM sudan I at IL/CdO/NPs/CPE with a scan rate of 100 mV s−1
Figure 4. SW voltammograms of a) CPE, b) CdO/NPs/CPE, c) IL/CPE and d) IL/CdO/NPs/CPE in the presence of 500 µM sudan I at a pH 8.0, respectively
Figure 5. Plot of Ipa versus ν1/2 for the oxidation of sudan I at IL/CdO/NPs/CPE. Inset shows linear sweep voltammograms of sudan I at IL/CdO/NPs/CPE at different scan rates of a) 30, b) 40, c) 55, d) 75, and d) 100 mV s−1 in 0.1 M phosphate buffer, pH 8.
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