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Fig. 7 | BMC Chemistry

Fig. 7

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. 7

A CVs of a BCPE, b ZnO NPs–CPE, c Poly (glutamic acid)/CPE and d Poly (glutamic acid)/ZnO NPs–CPE at scan rate of 100 mV/s and B SWVs of a BCPE, b ZnO/CPE, c Poly (glutamic acid)/CPE and d Poly (glutamic acid)/ZnO NPs–CPE in the presence of 7.5 µM vitamin B2 in 0.1 M PBS pH 6. 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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