Determination of Iron and Lead Contents in Technical Sodium Fluosilicate by Atomic Absorption Spectrometry 原子吸收光度法测定工业氟硅酸钠中铁、铅含量
H_2O_2 is used to transform Fe 2+ to Fe 3+, EDTA to eliminate the interference of Fe 3+ by free fluorine, and iron and lead contents are determined directly by AAS in the presence of a large amount of fluosilicate radical and free fluorine. 采用H2O2将Fe2+转变为Fe3+,EDTA消除游离氟对Fe3+的干扰,原子吸收光度法直接在大量氟硅酸根和游离氟存在下测定铁、铅含量。