应用循环伏安法(CV)研究镀锡液有机添加剂PSA(苯酚磺酸)、EN(α-萘酚聚氧乙烯醚)和ENSA(α-萘酚磺酸聚氧乙烯醚)的阳极伏安行为.实验证明,PSA溶液在1.2 V附近产生一个阳极氧化峰,EN和ENSA溶液在0.95 V和1.3 V都出现阳极氧化峰.恒电流电解后用HPLC(高效液相色谱)和EI/MS(电子轰击质谱)分析该有机添加剂的阳极氧化产物,讨论其相关的电化学反应机理.

Cyclic voltammetry(CV) was used to characterize the voltammetric behaviours of organic additives,e.g.PSA(phenolsulfonic acid)、EN(ethoxylatedα-naphthol) and ENSA(ethoxylatedα-naphthol sulfonic acid),on the anode surface.In PSA solutions,an anodic peak was obtained and the peak potential was about 1.2V.In EN and ENSA solutions,two anodic peaks were obtained and the peak potentials were about(0.95V) and 1.3V.The products of galvanostatic electrolysis were separated by HPLC(high performance liquid chromatography) and analyzed by EI/MS(electron ionizing mass spectrometry).The mechnism of the electrochemical oxidation was also disussed.