A novel substitutive potentiometric stripping analysis (PSA) for the determination of Pb 2+, Cd 2+ and Zn 2+ via bismuth-film electrode was proposed.

• 研究了用铋膜电极替代汞膜电极测定痕量重金属元素铅、镉和锌的电位溶出法。实验了同位镀铋膜及测定重金属特别是痕量铅的条件。