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研制了磷酸三丁酯（ＴＢＰ）碳糊修饰电极，在含１－苯基－３－甲基－４－苯甲酰基－５－吡唑酮（ＰＭＢＰ）的ＨＣｌ－ＫＣｌ底液中，通过电位富集，将三元络合物Ｐｂ（ＰＭＢＰ）２（ＴＢＰ）２中的铅富集在电极上，用２．５次微分阳极溶出伏安法测定铅．铅浓度在１．０×１０－９～２．５×１０－７ｍｏｌ·Ｌ－１范围内与峰高呈良好的线性关系．该电极用于铜合金和废水中铅的测定，获得满意结果．
A tributylphosphate (TBP) modified carbon paste electrode was developed. In the HCl-KCl solution containing 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) The lead was enriched in the ternary complex Pb (PMBP) 2 (TBP) 2, and the lead was determined by 2.5 differential anodic stripping voltammetry. The concentration of lead in the range of 1.0 × 10-9 ~ 2.5 × 10-7mol·L-1 showed a good linear relationship with the peak height. The electrode is used for the determination of lead in copper alloy and waste water and obtains satisfactory results.