A Research of the Tea Trace Element by ICP Spectrograph

The content of trace element in the tea from the different producing area was measured by using the Inductively Coupled Plasma spectrum (ICP). The distributive rule of trace element and the relativity of different trace element content is studied. The results shows that: (1)the content of certain trace element (B, Cu, Fe, Zn, Mn, etc.) in the different producing area tea change obviously, but the content of K,Ca,Na remain stabilization. (2)The relative content between the different tea represent the linearity to B, Cu, Fe, Zn,Mn etc, furthermore the slope change with the changing of tea producing region. (3) There also exist the relativity between the slope change and the tea latitude change. The study have significance to analysis the character of tea producing region and protect the original producing region tea.