Dynamic surface-enhanced Raman spectroscopy and Chemometric methods for fast detection and intelligent identification of methamphetamine and 3, 4-Methylenedioxy methamphetamine in human urine

The paper developed a novel method for the fast detection and intelligent identification of drugs in human urine using dynamic surface-enhanced Raman spectroscopy (D-SERS) and chemometric methods which included spectral separation, feature selection, feature extraction and classification algorithms.256