Elemental profile and oxygen isotope ratio (δ18O) for verifying the geographical origin of Chinese wines

Notes: ICP-MS, Inductively coupled plasma mass spectrometry; ICP-OES, Inductively coupled plasma optical emission spectroscopy; IRMS, Isotope ratio mass spectrometry; ANOVA, Analysis of variance; PLS-DA, Partial least squares discrimination analysis; SVM, Support vector machine.126