of inorganic As(III)/As(V), Se(IV)/Se(VI) and Sb(III)/Sb(V) in
environmentalwater samples with GF-AASwas described. Speciation
analysiswas carried out by the two analytical procedures.
The determination of total As, Se and Sb was studied in our previous
work; the determination of As(III), Se(IV) and Sb(III) was
investigated in detail. The concentrations of As(V), Se(VI) and
Sb(V) in sample solution could be calculated by the difference
between the two determinations. The proposed method has been
applied to the determination of trace amounts of As(III)/As(V),
Se(IV)/Se(VI) and Sb(III)/Sb(V) in river water and seawater.