Fig. 8. SERS spectra of thiram on apple peel with different concentrations (10−2 to 10−9 M) and the linear calibration curves constructed by monitoring the intensity of the strong 1384 and 1386 cm−1 spectral feature as a function of the analyte concentration: (a) and (c) Ag/CeO2 nanospheres, and (b) and (d) Ag/CeO2 nanospindles.
