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自1949年Wittig等合成了四苯硼酸钠(以下简称Na-TPB)试剂以来,Na-TPB对钾、铷、铯、银、汞以及含氮化合物等进行了广泛的定量研究,且已成为分析化学中的重要有机试剂。在Na-TPB的极谱研究方面,1959年Geske曾在乙腈中在铂阳极上用伏安法研究它的氧化还原反应,发现有二个波,第一波的n值为2,第二波的反应未曾肯定。1959年,Amos等曾用Na-TPB对钾盐作电流滴定。1961年,Heyrovsky用以滴定二价汞盐,但对波的性质均未作进一步研究。1960年Smith等曾在水溶液中在石墨电极上得到一个电流-电压曲线,对电极反应过程亦未作讨论。本文就Na-TPB在水溶液中的极谱行为进行了系统的研究,确定了波的性质及电极反应过程。
Since Wittig et al. Synthesized sodium tetraphenylborate (hereinafter referred to as Na-TPB) reagents in 1949, Na-TPB has been extensively studied quantitatively for potassium, rubidium, cesium, silver, mercury and nitrogenous compounds, Chemical important organic reagents. In the polarography of Na-TPB, Geske studied its redox reaction voltammetry on platinum anode in acetonitrile in 1959 and found that there are two waves, the first wave has an n value of 2 and the second wave The reaction was not confirmed. In 1959 Amos et al. Used titration of potassium with Na-TPB. In 1961, Heyrovsky was used to titrate divalent mercury salts, but no further studies on the nature of waves were conducted. In 1960, Smith et al. Obtained a current-voltage curve on a graphite electrode in an aqueous solution and did not discuss the electrode reaction process. In this paper, the polarographic behavior of Na-TPB in aqueous solution has been studied systematically, and the nature of the wave and the electrode reaction process have been determined.