Rapid Detection of Pesticide Residues in Chinese Herbal Medicines by Fourier Transform Infrared Spectroscopy Coupled with Partial Least Squares Regression

Figure 2

Correlation plots of the predicted concentrations versus the actual ones for Ca (a), Th (b), and Te (c) in Radix Angelicae Dahuricae using NIR-PLSR.

(a)

(b)

(c)