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在溶出分析的预电解过程中,需要强烈搅拌溶液,增加电活性物质向电极表面迁移的通量。因为在电极上富集量只占总体量的很小部分(薄层电解池除外),要得到重现的结果,除了仪器、电极、化学成份和时间因素一致外,在一定形状的电解池中,流体动力学状况对富集量的多寡将起重要作用。为此,预电解时必须保证溶液的搅动状况一致。目前常采用电极旋转、电磁搅拌子或搅拌棒搅拌。这些搅拌方法有缺点,例如旋转电极的电接触用汞,久之易变黑氧化,金属导线也会受汞浸蚀,往往导致接触不良;如果改用电刷,也会磨损发热,外电路的阻值不稳定。旋转电极的马达常放在电解池上方,用示波极谱仪测定
In the pre-electrolysis process of dissolution analysis, a strong agitation solution is required to increase the flux of electro-active material migrating to the electrode surface. Because the amount of enrichment on the electrode only accounts for a small portion of the total volume (except for the thin-film cell), the results to be reproduced, in addition to the same instrument, electrode, chemical composition and time factors, in a shape of the cell , Hydrodynamic status of the amount of enrichment will play an important role. To this end, pre-electrolysis solution must ensure that agitation consistent. Currently used electrode rotation, electromagnetic stirrer or stirring rod stirring. These stirring methods have disadvantages, such as mercury in the electrical contact of the rotating electrode, darkening of the black for a long time, and corrosion of the metal wire by mercury, which often leads to poor contact. If the brush is used, it will also wear away heat and the resistance of the external circuit Value is not stable. Rotary electrode motor is often placed above the electrolytic cell, measured by oscillopolarography