Figure 5

(a) SERS spectra of quaternary mixture sample A5 to A9. (b) Plot of PCs scores for 1, 4-BDT, 2-NaT, 4-MBA, 4-MPY, and their quaternary mixtures. (c) Plot of real composition in solution versus composition of corrected PCA predictions.

(a) SERS spectra of quaternary mixture sample A5 to A9. (b) Plot of PCs scores for 1, 4-BDT, 2-NaT, 4-MBA, 4-MPY, and their quaternary mixtures. (c) Plot of real composition in solution versus composition of corrected PCA predictions.