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Fig. 11 | BMC Chemistry

Fig. 11

From: Sensitive and selective determination of vitamin B2 in non-alcoholic beverage and milk samples at poly (glutamic acid)/zinc oxide nanoparticles modified carbon paste electrode

Fig. 11

A SWVs for different concentrations of vitamin B2: 0.005, 0.02, 0.04, 0.1, 0.5, 1.5, 3, 4, 5, 5.5, 6.5, 7.5 and 10 µM in 0.1 M PBS pH 6 at poly (glutamic acid)/ZnO NPs–CPE: Inset: magnified SWVs for lower concentrations (0.005–0.04 µM) and B Plot of the peak current versus concentration of vitamin B2 at poly (glutamic acid)/ZnO NPs–CPE. Conditions: open circuit accumulation for 180 s. Potential scan -1.0 V to 0.0 V. SWV parameters: frequency, 15 Hz; step potential, 4 mV and pulse amplitude, 40 mV

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BMC Chemistry

ISSN: 2661-801X

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