Abstract
Various mineralization methods for plant material analysis by AAS are presented and their advantages and limits are discussed. Wet digestion by H 2SO 4HNO 3H 2O 2 mixture appears as a very rapid method which gives good recovery of trace elements and is thus suitable for routine analysis. Determination of relatively high concentrations of Cu, Zn, Fe, Mn, Ni, Cr, Co, Cd, Pb, As, Sb and Tl is carried out by flame AAS with a good analytical speed and without noticeable interferences. Pb, Cd, As, Sb and Tl appear generally in very low concentrations in plants so that electrothermal atomization is necessary. Various interferences are observed in this case. They are discussed and methods are presented for their correction.
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