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本文研究了铅-四(4-三甲胺苯基)卟啉络合物在汞电极上的吸附反应过程。实验证明,铅卟啉络合物在汞电极上有较强吸附。非离子型表面活性剂Tritonx—100对络合物的吸附有增强作用。吸附络合物中的金属离子和配体同时还原产生了灵敏的络合物吸附波。该方法应用于多种样品中的痕量铅测定,得到满意结果。此外,本文还详细地研究了电极反应机理。
In this paper, the adsorption reaction of lead-tetrakis (4-trimethylaminophenyl) porphyrin complex on mercury electrode was studied. Experiments show that the lead-porphyrin complex has strong adsorption on the mercury electrode. Nonionic surfactant Tritonx-100 enhanced the adsorption of the complex. The simultaneous reduction of metal ions and ligands in the adsorbed complex results in a sensitive complex adsorptive wave. The method is applied to the determination of trace lead in various samples and gives satisfactory results. In addition, this paper also studied the electrode reaction mechanism in detail.