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在氨性介质中,邻菲啰啉与Cr(Ⅵ)有一峰电流较大的催化波,Cr(Ⅵ)浓度在0.006～0.16μg/ml范围内与峰电流呈线性关系,检测限为7.7×10~(-8)mol/L,该法可用于矿石和水样中Cr的测定。
In ammonia medium, the phenanthroline and Cr (Ⅵ) have a catalytic current with large peak current. The linear range of Cr (Ⅵ) concentration is 0.006 ~ 0.16μg / ml, the detection limit is 7.7 × 10 ~ (-8) mol / L, the method can be used for the determination of Cr in ore and water samples.