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Flow Injection Analysis of Ellagic Acid in Cosmetic Skin-Whitening Creams Using a Dendritic Nanostructured Copper-Gold Alloy Plated Screen-Printed Carbon Electrode

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Figure

Figure 1. SEM pictures of (A) bare SPE (B and C) SPE/{Cu-Au}nano with dendritic structure and at magnifications and (D) elemental analysis of SPE/{Cu-Au}nano by energy dispersive X-ray analysis
Figure 2. CV responses of (A) SPE/Cu (B) SPE/Au and (C) SPE/{Cu-Au}nano at potential window of +0.6 V to -0.6 V vs
Figure 3. Optimization of FIA parameters for the detection of 50 mgL-1 ellagic acid with SPE/{Cu-Au}nano working electrode
Figure 4. (A) FIA response of SPE/{Cu-Au}nano at different ellagic acid concentrations under an optimal condition and (B) Plot of peak current versus [EA] from the figure 4A
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