Rapid Identification of Fupenzi (Rubus chingii Hu) and Its Adulteration by AuNP Visualization

Figure 3

UV-vis spectrum of Fupenzi, AuNPs, and adulterants. (a) UV-vis spectrum of raspberry and adulterants; (b) UV-vis spectrum of mixtures with different concentrations; (c) UV-vis spectrum of AuNPs combined with mixtures of different concentrations; (d) AuNP UV-vis spectrum in ultrapure water.

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