Fig. 9: Spectral deconvolution of hidden peaks. | Communications Chemistry

Fig. 9: Spectral deconvolution of hidden peaks.

From: Hand-portable HPLC with broadband spectral detection enables analysis of complex polycyclic aromatic hydrocarbon mixtures

Fig. 9

The number of species is estimated using a PCA plot and the K-means clusters of the spectra obtained within the elution time range 8.0–10.2 min, suggesting the presence of 5 unique species. The black circles denote the centre of each cluster. The trajectory of spectra in the space determined by the principal components.

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