论文部分内容阅读
极谱法是研究络合物的有效手段之一。但利用极谱法研究非电活性金属离子的络合物尚不多见。董绍俊等用极谱电流法研究了紫脲酸铵与稀土离子的络合物。本文研究了紫脲酸铵-钙络合物的极谱性能,测定了络合物在不同pH及不同温度下的表观稳定常数,讨论了络合过程及电极过程的机理。一、实验部分极谱仪为笔录式883型。电解池为Kalousek式,参比电极为饱和甘汞电极。滴汞电极在0.1M氯化钾溶液中当汞柱高度为64厘米时汞流速为3.36毫克/秒,自由滴下时间为2.12秒。控时敲击器和记录阴阳极循环伏安图的多性能极谱仪系自装。悬汞电极为日本三菱化成工业株式会社制。
Polarographic method is one of the effective methods to study complex. However, polarographic studies of non-electroactive metal ion complexes are rare. Dong Shaojun and other polarographic current method of ammonium urea and ammonium ion complex complexes. In this paper, the polarographic properties of ammonium urea-urea complexes were investigated. The apparent stability constants of complexes were measured at different pHs and temperatures. The mechanism of the complexation process and electrode process were discussed. First, the experimental part of the polarographic record type 883. Electrolyser for Kalousek type, the reference electrode is saturated calomel electrode. The drop mercury electrode had a mercury flow rate of 3.36 mg / sec in a 0.1 M potassium chloride solution with a mercury column height of 64 cm and a free drop time of 2.12 seconds. Control the percussion device and record the cathodic cyclic voltammogram of multi-performance polarography self-installed. Hanging mercury electrode Japan’s Mitsubishi Chemical Co., Ltd. made.