A Critical Evaluation of Single Extractions from the SMT Program to Determine Trace Element Mobility in Sediments

Table 7

Formation constants (log K) for 1 : 1 metal EDTA complexes and 1 : 1 metal acetate complexes.

	Stability constant for acetic acid	Reference	Stability constant for EDTA	Reference
Cu^2+	1.76, 1.87, 2.71, 3.09, 3.63	[61, 62]	19.7, 18.8	[63, 64]
Zn^2+	0.91, 1.9	[61, 62]	17.5, 16.5	[63, 64]
Ni^2+	0.74, 0.83, 1.43	[61, 62]	19.5, 18.56	[63, 64]
Cd^2+	1.19, 1.23, 1.32, 1.82, 3.15	[61, 62]	17.4	[63, 64]
Pb^2+	3.5, 2.98, 4.08	[61, 62]	19	[63, 64]
Co^2+	0.71	[65]	16.21	[64]
Mn^2+			13.56	[64]
Fe^3+			25.7	[64]
Ca^2+	0.5	[65]	10.7	[64]
Al^3+			16.3	[64]