Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe<sub>3</sub>O<sub>4</sub> in a Cosmetic Skin Product

<div>The effect of incubation time on the response signal; spectra showing the effect of incubation time on the response signal of 0.1 mM of 4-nitrophenol in the sensing system at 400 nm (a) before and (b) after adding mercury.</div>

Nanomaterials and Nanotechnology

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Figure 6

Figure 6: Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe<sub>3</sub>O<sub>4</sub> in a Cosmetic Skin Product 

Figure 6 | Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe3O4 in a Cosmetic Skin Product 