本文对大量铜存在下锌、镉的测定进行了研究,指出在pH3—4的2.5%α-氨基丙酸-13%氯化铵的底液中,采用反向扫描示波极谱法,在含铜量高至20%的情况下,可不经分离连续测定4×10~(-4)—0.1毫克/毫升锌和5×10~(-5)—0.1毫克/毫升镉。方法准确、快速、简便,适于各种铜矿石、铜精矿和其它铜含量高的试样中锌镉的连续测定。 In this paper, the determination of zinc and cadmium in the presence of a large amount of copper has been studied. It is pointed out that in the bottom solution of 2.5% α-aminopropionic acid-13% ammonium chloride at pH 3-4, reverse- With a copper content as high as 20%, 4 × 10 -4 - 0.1 mg / ml zinc and 5 × 10 -5 - 0.1 mg / ml cadmium can be continuously measured without separation. The method is accurate, rapid and simple, and it is suitable for the continuous determination of zinc and cadmium in various copper ores, copper concentrates and other samples with high copper content.