高速シグナル計測-高温炉原子吸光法における化学干渉の除去と生物試料中の重金属定量への応用

抄録

Tungusten-strip electrothermal AAS using a fast response measurement system was applied to the determination of copper, iron, cadmium and zinc in biological samples. Based on the atom formation model function, activation energies of these elements at the atomization stage were measured to ascertain chemical interferences and select interference-free analytical conditions. Activation energies obtained for copper, iron and zinc metals in the absence of a matrix were in agreement with those obtained for these metals contained in NBS biological standard reference materials. Also, analytical values agreed well with the certified ones within the precision of the present method. These results demonstrate that chemical interferences are negligibly small under the analytical conditions selected.