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在普通极谱分析工作中必须进行除氧步骤。当分析液为中性或碱性时,使用亚硫酸钠法进行除氧,不仅操作简易而且作用快速。关于这一方法,以及有关亚硫酸根的极谱性能和亚硫酸钠使用量方面的研究,虽早有所报导,但迄今文献中尚未讨论到在各种常用底液中采用此法除氧时所允许充分利用的外施电压范围。几年以来,作者在实际分析工作中,凡使用此法除氧时,无论是用足够量的固体亚硫酸钠或加入新配制的亚硫酸钠溶液,只要有稍过量的亚硫酸根离子存在卽发现:当施用电压处于-0.2伏以前,亦卽较-0.2伏为正时,则有一极谱波出现.本文卽针对此极谱波,在七种常
Oxygen scavenging must be performed during normal polarographic analysis. When the analytical fluid is neutral or alkaline, the use of sodium sulfite method for oxygen, not only easy to operate and fast action. Although this method and the studies on the polarographic properties of sulfite and the amount of sodium sulfite used to be reported have been reported some time ago, the literature has not yet discussed the use of this method in oxygen removal Take advantage of the applied voltage range. Over the years, the author in the actual analysis, where the use of this method of deoxygenation, either with a sufficient amount of solid sodium sulfite or sodium sulfide solution was added as long as a slight excess of sulfite ion is found: when applied When the voltage is at -0.2 volts, and also when -0.2 volts is positive, a polarographic wave appears. In this paper, for this polarographic wave,