论文部分内容阅读
本文报导聚丙烯酰胺肟电极的研制及在银的富集、分离和测定中的应用。用光谱纯碳棒作为基体电极,经预处理极化浸渍聚丙烯腈并羟胺化,制成聚丙烯酰胺肟电极。对电极膜进行了鉴定,红外光谱图证明,目的功能团已进入了电极表面,电子显微镜测定了膜的厚度,约为56μm左右,此电极在-0.5—+0.7V(对饱和甘汞电极)作电循环扫描时,电极本身不起电化学反应。该电极对银离子有强的络合能力,采用先络合,还原沉积并随后溶出的方法,可用于痕量银的测定,当pH=6时,所研究过的离子均不干扰银的测定,样品分析结果与标准数据一致。
This paper reports the development of polyacrylamide oxime electrode and its application in the enrichment, separation and determination of silver. Spectra of pure carbon rod as the base electrode, pretreatment of polyacrylonitrile polarization and hydroxylamine, made of polyacrylamide oxime electrode. The electrode film was identified, the infrared spectrum proved that the purpose of functional groups have entered the electrode surface, the electron microscope measured the thickness of the membrane, about 56μm, the electrode at -0.5 - +0.7 V (for saturated calomel electrode) For electric cycle scanning, the electrode itself can not afford electrochemical reaction. The electrode has a strong ability to complex silver ions, the use of the first complex, reduction deposition and subsequent dissolution method can be used for the determination of trace silver, when pH = 6, the studied ions do not interfere with the determination of silver , Sample analysis results consistent with the standard data.