研究了Bi^3＋在碳糊电极上的阳极溶出伏安特性，结果表明：在1．0mol·L^-1的HCl溶液中，于-0．055V处出现一灵敏的溶出峰，电极反应过程是受吸附控制的电极过程。并考察了测定Bi^3＋的最优化条件，在1．0mol·L^-1的HCl溶液中，于0．4V富集80s后，以120mV／s扫描速度进行测定，结果表明：在1．0×10^-7-1．0×10^-4mol·L^-1浓度范围内，Bi^3＋的溶出峰电流Ip与其呈良好的线性关系，检出限为6．0×10^-8mol·L^-1（信噪比RSN=3）。将该法应用于药物中铋含量的测定，回收率在99—102％，结果令人满意。%The anodic stripping volt - ampere characteristic of Bi^3 ＋ on the carbon paste electrode was studied. The results show that there is a well defined stripping peak at -0.055V in the HCl solution（ 1.0mol L^-1）, and the electrode reaction is an adsorptioncontrolled process. In addition, we investigated the optimal condition of detecting Bi^3＋ . The performance was carried at the scan rate of 120mV/s in the HCI solution （ 1.0mol L^-1 ） after accumulating tbr 80s at 0.4V. The results show the calibration curve was linear in the Bi^3 ＋ concentration range of 1.0 × 10^-7 - 1.0×10 4 mol · L^-1 with a detection limit of 6.0 × 10 ^-8mol L 1 （ RsN = 3）. When the proposed method was applied in determining the content of Bi^3 ＋ in drugs, the results were satisfactory for that the recove was at 99% - 102%.
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