Detection of Counterfeit Tequila by Fluorescence Spectroscopy

Figure 5

Fake tequila fluorescence (FT) compared to ethanol and distilled water mixtures fluorescence at different excitation wavelengths. (a) 255 nm, (b) 330 nm, (c) 365 nm, and (d) 405 nm.

(a)

(b)

(c)

(d)