Objective To determine 12 inorganic elements in Vitis amurensis by atomic absorption spectrometry(AAS).Methods Samples were dried and crushed with a mechanical device.Weighing 1.000 0 g of crushed Vitis amurensis and putting into a 150 ml Erlenmeyer flask.Adding 20 ml of acid digestion reagent(HNO3 ∶HClO4=4∶1 by volume)and then heated on an electric hot plate.The contents of K,Ca,Na,Mg,Fe,Mn,Zn,Cu and Cr in Vitis amurensis were determined by flame atomic absorption spectrometry,the contents of C...