摘要： 制备了嵌入式多壁碳纳米管膜玻璃碳电极，研究了铅在电极上的电位溶出行为，建立了嵌入式碳纳米管－铋复合膜电极测定铅的微分电位溶出分析法。结果表明：富集电位为 -1.1V，HAc-NaAc（pH＝4.60）缓冲溶液中，峰高与铅浓度在 0.1~20.0μg/L范围呈线性，检出限为 0.5μg/L，对实际样品进行测定，相对标准偏差（RSD）值在38%~71%之间，回收率在 95.2%~98.7%之间。

关键词: 多壁碳纳米管, 铋膜, 微分电位溶出法, 涂料, 铅

Abstract: Inlaide carbon nanotubes-bismuth film modified electrode was prepared based on glassy carbon electrode. The electrochemical behavior of Pb was investigated by potentiometric stripping analysis. A determination method of Pb in coatings was established. The results showed that at electrolysis potential of -1.1V and HAc-NaAc( pH=4.60)buffer solution, the linear relation between the stripping peak(dt/dE) and the concentration of Pb langed from 0. 1 to 20 μg/L, with the detection limit 0.5 μg/L and RSD and the recovery 3. 8%-7. 1% and 95. 2%-98.7% respectively for a sample test.

Key words: carbon nanotubes, bismuth film, differential Potentiometric strpping analysis, coatings, lead