Online VAWhen reaching the late stage of growth and the area remains relatively constant, a pulse voltage is rapidly applied to the two electrodes of the electrolytic cell, and the current voltage curve generated on a droplet of mercury is observed using an oscilloscope. The polarographic wave exhibits a peak shape, with a sensitivity 1-2 orders of magnitude higher than that of direct current polarography, and a detection limit of 10-7mol per liter. High resolution and strong resistance. The adjacent two pole spectral waves with a peak potential difference of 50mV can be distinguished, and the concentration of the pre reducing substance is 100-1000 times higher than that of the post reducing substance, which does not interfere with the measurement. The rapid application of polarization voltage by the volt ampere polarograph generates a large charging current, so effective compensation measures for the charging current need to be taken. Irreversible processes do not exhibit polarographic peaks, reducing or even eliminating the interference of oxygen waves.
Whether it is standard analysis or specific analysis applications, with Ethernet ports, data can be quickly obtained and transmitted in real-time, using intuitive user navigation on the display screen. The intuitive menu navigation system and 7-inch color touch screen allow you to input and calibrate through a few simple steps. The volt ampere polarograph is equipped with over 250 pre programmed methods, including parameters such as TOC, heavy metals, and nutrients. Quickly applying polarization voltage generates a large charging current, so effective compensation measures for the charging current need to be taken. The irreversible process does not produce polarographic peaks, reducing or even eliminating the interference of oxygen waves.
Before each use of the voltammetric polarograph, the electrode needs to undergo electrochemical pretreatment, which is set in the method and automatically repeated until the measured value stabilizes. The effective concentration of additives is expressed in milliliters per liter of tank solution and printed out. This means that the concentration of additives can be accurately adjusted. Ensured the continuity and interference free operation. Especially the accuracy of the analysis results of the voltammetric polarograph has made this method accepted by the electroplating industry. Other methods, such as the classic Hou's groove method, can only provide an evaluation of coating quality and cannot determine additive concentration.