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在极谱分析中,判断所产生的极谱电流的性质已成为不可缺少的研究内容之一。前人为研究极谱基本理论已提出一系列的实验方法,人们从介质pH、缓冲溶液性质,电活性物质浓度、表面活性物质、温度及(经典极谱上)汞柱高度等因素对极谱电流的影响以及由电毛细管曲线和i—t曲线形状的变化来判断极谱电流的性质。 示波极谱技术的出现使极谱分析得到进一步发展。目前我国已全面普及示波极谱分析方法。许多新的极谱分析方法的研究和应用(包括催化极谱、络合物吸附波)均在示波极谱仪上进行。示波极谱有不同于经典极谱的特点(如外加电压的快速扫描,单汞滴的电极过程等),因此在应用前人的实验方法来研究电极过程时应注意所采用的极谱技术。 应用示波极谱来判断所研究的极谱电流性质早已引起人们的重视亚提出相应的实验方法,如从示波极谱波形状的差异,阴阳极化曲线的峰电流及峰电位的不同,lgi—lgv(v为
In polarographic analysis, judging the nature of the generated polarographic current has become one of the indispensable research contents. The predecessors have put forward a series of experimental methods for studying the basic theory of polarography. From the aspects of medium pH, buffer solution, electroactive substance concentration, surface active substance, temperature and height of mercury (classical polarography), the polarographic current As well as the nature of the polarographic current as dictated by changes in the shape of the electric capillary and the i-t curve. The advent of oscillopolarography has led to the development of polarographic analysis. At present, China has fully popularized the oscilloscope polarographic analysis method. Many new polarographic methods of research and applications (including catalytic polarography, complex adsorption wave) were performed on the oscilloscope. Oscillographic polarography is different from the characteristics of the classical polarographic (such as the rapid application of voltage scanning, single mercury drop electrode process, etc.), so in the application of previous experimental methods to study the electrode process should pay attention to the polarographic techniques used . The application of oscillographic polarography to determine the nature of the studied polarographic current has drawn people’s attention to sub-experimental methods, such as the difference of the polarographic waveform, the peak current and the peak potential of the cathodic polarization curves, lgi-lgv (v is