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本文采用玻碳电极经用离子抛光法抛光,其光洁度为▽_(14)(▽_(14)-四花14级,系国家金属表面最高光浩度),直接与极谱仪联用代替滴汞电极。电极性能良好,完全适用于铁矿、铜矿、多金属矿和铅锌矿中的铜、铅、锌的测定,波形稳定,重现性好。测定范围:铜、铅0.01-10%,锌0.1-8%。其峰值电位分别为Cu--0.07伏,Zn--1.66伏,Pb--0.64伏(均对SCE)。一仪器与试剂 JP-1A型示波极谱,自制玻碳电极。氨底液:量取214毫升浓氨水,54克氯化铵于1升量瓶中加水定容。其浓度为3NNH_4Cl,1NNH_4Cl。混合底液:按16毫升氨底液与4毫升亚硫酸钠溶
In this paper, glassy carbon electrode polished by ion polishing, the finish is ▽ _ (14) (▽ _ (14) - four flowers 14, the Department of the national highest-degree light ho metal surface), directly with the polarographic instrument instead of the drop Mercury electrode. Electrode performance is good, fully suitable for the determination of copper, lead, zinc in iron ore, copper, polymetallic ore and lead-zinc ore, stable waveform, good reproducibility. Measurement range: copper, lead 0.01-10%, zinc 0.1-8%. The peak potentials were Cu - 0.07V, Zn - 1.66V, Pb - 0.64V (both for SCE). Instrument and reagent JP-1A oscillopolarography, homemade glassy carbon electrode. Ammonia liquid: Take 214 ml of concentrated ammonia, 54 g of ammonium chloride in 1 liter volumetric flask with water. The concentration of 3NNH_4Cl, 1NNH_4Cl. Mixed base solution: According to 16 ml ammonia solution and 4 ml of sodium sulfite solution