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在示波极谱滴定中,当去极剂切口位于示波极谱图|dE/dt|的最大值附近时,利用Antilg dE/dt～E示波图来指示滴定终点能使终点变化更为敏锐。原来较难进行滴定的一些体系现在可用这种方法滴定。在50Hz的交流电频率下,用氨羧络合剂滴定了Cd~(2+)、Pb~(2+)、Zn~(2+)、Co~(2+),滴定结果符合分析要求。非线性放大还可应用于以dE/dt～E示波图的扩张或收缩来指示滴定终点的示波极谱滴定法及以荧光电位线的伸长或收缩来指示滴定终点的示波电位滴定法,以提高终点变化的敏锐性。以亚硝酸钠滴定对氨基苯磺酸为例说明了这一方法的可行性。
In oscillopolarographic titration, the endpoint of titration can be more indicated by Antilg dE / dt-E oscillogram when the dopant incision is located near the maximum of the oscilloscope polarogram | dE / dt | keen. Some systems that were harder to titrate can now be titrated this way. The titration of Cd2 +, Pb2 +, Zn2 + and Co2 + was titrated with ammonia carboxylaccase at 50Hz AC frequency. The titration results were in accordance with the analytical requirements. Non-linear amplification can also be applied to oscillopolarotometry which indicates the end point of titration with the expansion or contraction of the dE / dt-E oscillogram and oscillometric potentiometric titration with the extension or contraction of the fluorescence potential line to indicate the end point of the titration Act, in order to improve the acute change of end point. The titration of sodium nitrite to sulfanilic acid as an example illustrates the feasibility of this method.