Table 3. Standard Reduction Potentials of Cd²⁺, Pb²⁺, and Interfering Ions⁶⁹.

half-reaction	standard reduction potential (V)
	0.337
	–0.04
	–0.13
	–0.25
	–0.28
	–0.40
	–0.44
	–0.76
	–1.18
	–2.91