Figure 10. Concentration dependence of lead (black circles), cadmium (red circles) and tin (green circles). R2: coefficient of determination.

From

Stripping voltammetry with a bismuth electrode as an alternative to mercury electrode - a contribution to green chemistry

A. Habekost

World Journal of Chemical Education. 2023, 11(3), 92-96 doi:10.12691/wjce-11-3-12