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Fig. 4 | Journal of Analytical Science and Technology

Fig. 4

From: Gold nanoparticle-based sensing platform of hydrazine, sulfite, and nitrite for food safety and environmental monitoring

Fig. 4

a CV curves of the APS-Au NPs (Si:Au = 100:0.1 (a), 100:1 (b), and 100:10 (c)) electrodes recorded for 250 μM of sulfite at a scan rate of 50 mV s−1. b CV curves of the APS-Au NPs (Si:Au = 100:1) electrode with different scan rates of 10 (a), 20 (b), 50 (c), 75 (d), 100 (e), 125 (f) and 150 (g) mV s−1 for 250 μM sulfite. Inset: the plot of anodic peak current against the square root of scan rate. c CV curves of the APS-Au NPs (Si:Au = 100:1) electrode recorded for 250 (a), 500 (b), 750 (c), 1000 (d), 1250 (e), 1500 (f), 1750 (g), 2000 (h), and 2250 (i) μM of sulfite at the scan rate of 50 mV s−1. Electrolyte, 0.1 M PB (pH 7.2). d The corresponding calibration plot

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