交流ポーラログラフ分析諸条件のアンモニア-塩化アンモニウム基礎液における銅,亜鉛ポーラログラムへの影響

概要

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To survey the behavior of an A. C. polarograph instrument of self-balancing A. C. bridge type, from the standpoint of practical operation, the polarograms of copper and zinc in one mole ammonium chloride ammonium hydroxide have been studied. The results, which are mainly concerned with the effects on the peak height of wave, are as follows: (1) The effect of the electrolyte temperature is smaller than in the case of D. C. polarograph in the range from 10 to 30°C. (2) The effect of the distance between electrodes is so small that it is negligible in routine work in the range from 5 to 20 mm. (3) The amplitude of superimposed A. C. voltage has some effect on the peak height, and therefore the optimum A. C. voltage must be chosen with consideration for the linearity between peak height and concentration of the metal ions, and also for reproducibility of measurements. (4) Dissolved oxygen does not affect the reproducibility of measurments nor the linearity between the peak height and concentration of the metal ions although it does affect the peak height itself. (5) As the effect of the concentration of gelatin on the peak height is large, care must be taken in this respect when gelatin is used.
社団法人日本分析化学会の論文