Survey of Mineral Elemental Contents in Green and Black Tea by Inductively Coupled Plasma-Atomic Emission Spectrometry

Abstract

The contents of mineral elements in Japanese green teas and foreign black teas were determined by Inductively Coupled Plasma-Atomic Emission Spectrometry. The contents of some elements showed the geographic characteristics among Japanese green teas produced from different areas in Japan. The contents of P, Ca, Cu and Ni in Japanese green tea were significantly different from those in foreign black teas.