建立了一种测定痕量铋的新方法,即利用掺杂硒碳糊电极作为工作电极的阳极溶出法。在0.1 mol/L的HCl底液中,Bi3+于+0.05V(vs.Ag/AgCl)出现灵敏的氧化溶出峰,铋离子的浓度在1.0×10-5～1.0×10-9 mol/L范围内其对数值lgc与铋的氧化峰电流值呈线性关系,检出限达1.0×10-10mol/L。本法已用于药物枸橼铋钾颗粒中铋含量的测定,回收率为95.5%～104.9%。 A new method for the determination of trace amounts of bismuth was established, that is, anodic stripping method using a doped selenide carbon paste as a working electrode. In 0.1 mol / L HCl solution, Bi3 + showed a sensitive oxidation peak at + 0.05V (vs.Ag/AgCl) with the concentration of bismuth ion in the range of 1.0 × 10-5 ~ 1.0 × 10-9 mol / L Within the logarithm of lgc and bismuth oxidation peak current value was linear, the detection limit of 1.0 × 10-10mol / L. This method has been used for the determination of bismuth in bismuth potassium citrate granules with the recoveries of 95.5% -104.9%.