论文部分内容阅读
交流示波极谱滴定法的理论及其应用已有专文评述。示波极谱滴定铋的工作尚未见报导。我们曾经用悬汞电极为工作电极发现1毫克左右的Bi~(3+)在HAc-NaAc溶液中即能在其dE/dc=f(E)曲线上产生锐敏切口,但Bi~(3+)增加不多后切口便逐渐变钝,甚至图形有畸变倾向。本文很据恒电流交流示波极谱的特点,即汞滴面积越小则双电层电容也越小,而dE/dt的变化则越大,采用尽可能小的悬汞滴或沾汞电极,使dE/dt=f(E)曲线图得到良好的伸展,将Bi~(3+)
Acoustic oscillographic titration theory and its application has been commented. Oscillographic titration of bismuth has not been reported. We have used the hanging mercury electrode as the working electrode and found that about 1 mg of Bi 3+ in the HAc-NaAc solution produced a sharp incision on the dE / dc = f (E) curve, but Bi 3+ After the increase of incision will be less dull, and even distortion of the graphics tend to. This article is based on the characteristics of constant current AC oscillopolarography, the smaller the mercury drop area is the smaller the electric double layer capacitance, and dE / dt changes the greater the use of mercury droplets as small as possible or mercury electrode , The dE / dt = f (E) curve is well extended, the Bi ~ (3+)