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钢铁中铜和镍的连续极谱测定,由于使用滴汞电极,在日常生产中需接触大量的汞,因而推广应用受到了限制,日前仍多采用光度分析法。本文根据75—4B型快速极谱仪及汞膜电极的特点,应用于连续测定钢铁中的铜和镍,取得了较为满意的结果。在1M氯化铵3M氢氧化铵底液中,以亚硫酸钠除氧,可得到清晰良好的峰状极谱波,铜和镍含量在0.1～10毫克/50毫升范围内,其浓度与波高呈良好的线性关系,精密度及准确度均符合生产上的要求。基体铁可采用同
Continuous determination of copper and nickel in steel by polarography, due to the use of droplet mercury electrode in the daily production of large amounts of mercury to be exposed, which promote the use of restricted, more recently the use of photometric analysis. According to the characteristics of 75-4B rapid polarographic apparatus and mercury film electrode, this paper has been applied to the continuous determination of copper and nickel in steel, and satisfactory results have been obtained. In 1 M ammonium chloride 3M ammonium hydroxide bottom solution, with sodium sulfite oxygen, can be clearly good peak polarographic wave, copper and nickel content of 0.1 ~ 10 mg / 50 ml range, the concentration and wave height was good The linear relationship, precision and accuracy are in line with the production requirements. Matrix iron can be used with the same