Simultaneous Determination of 10 Trace Elements Manganese, Iron,Zinc,Chromium,etc in Tea

The tea samples were broken and dried,and then were digested by mixtures of HNO3 and HClO4.The trace elements of K,Ca,Na,Mg,Fe,Mn,Cu,Zn,Ni and Cr were determined by flame atomic absorption spectrometry.The results show that the recoveries of these microelements are between 89.30% to 103.20% and relative standard deviation less than 10%.The method is simple,fast,economical and with satisfactory result.