中文摘要：

介绍了一种用PVC碳糊电极测定Pb^2＋的方法．该法在开路电路条件，富集介质为0．1mol／LKNO3（pH11．0），检测底液为0．15mol／LHNO3．用微分脉冲阳极溶出伏安法扫描，有一灵敏Pb氧化峰出现，峰电位为-0．496v（vs．Ag／AgCl），溶出峰电流与Pb^2＋在1．0×10^-7-2．0×10^-5mol／L浓度范围内成很好的线性犬系，线性相关系数为0．9960，检出限为5．0×10^-8mol／L．

英文摘要：

The determination of lead with PVC paste carbon electrode（ PVC -CPE） is presented. Under open circuit conditions, the PVC - CPE was soaked in an aqueous solution containing Pb^2＋ （0.1 mol/L KNO3 at pH 11.0） , then was scanned by a differential pulse voltammetry in the solution of HNO3 0.15 mol/L. The anodic stripping votummogram was recorded, and an anodic peak at - 0.496 V （ vs. Ag/AgCl） was observed. The detection limit was 5.0 × 10^-8 mol/L. The linear range was 1.0 × 10^-7--2.0 × 10^-5 mol/L,and linear correlation coefficent was 0. 996 0.