本文采用流通电解池一介质交换方法研究了铅和锡在酸性介质中的差示脉冲阳极溶出伏安行为,在流动的含有样品的盐酸溶液中预电解富集,而在静止的不含样品的草酸溶液中溶出,其△Ep≥90 mV,波形完好。确定了同时测定痕量级铅、锡的最佳条件,样品分析结果表明,方法准确、简便、快速、灵敏。 In this paper, the differential pulse anodic stripping voltammetry of lead and tin in acid medium was studied using a flow-through electrolytic cell-medium exchange method. Pre-electrolysis enrichment was carried out in the flowing hydrochloric acid solution containing sample, while in static sample-free Oxalic acid solution, the △ Ep ≥ 90 mV, the waveform intact. The optimum conditions for simultaneous determination of trace levels of lead and tin were determined. The results of sample analysis showed that the method was accurate, simple, rapid and sensitive.