大量三价铬中微量六价铬的分离和测定

Separation and determination of trace chromium(Ⅵ) in mass chromium(Ⅲ)

研究了大量 Cr( )中微量 Cr( )的分离和测定方法 ,该方法灵敏度高 ,干扰少 ,摩尔吸光系数为 1.6× 10 5L /( m ol·cm )。最佳线性范围 0～ 1.0 m g/L ,检出限为 0 .0 0 2 m g/L。

The method for the separation and determination of trace Cr(Ⅵ) exiting in mass Cr(Ⅲ) has been researched. The method is highly sensitive and less interference. The molar absorption coefficient is 1.6×10\+6 L(mol·cm). The excellent linear range is 0~1.0 mg/L and the limit of detection is 0.002 mg/L.\;