787
Complexation of Dissolved Organic Matter with Trace Metal Ions in Natural Waters
Elements or groups
Conditional stability constants (log
10 K)
pH
References
Fulvic acid a
Humic acid a
Tryptophan or
protein or EPS a
Autochthonou DOM
or hydrophilic or
hydrophobic a
Other organic
ligands a
Cu 2+
with DOM (Southeastern
Gulf of Mexico)
–
–
–
≥12; 9.8
–
8.2
Sunda and Ferguson
(1983)
Cu 2+
with DOM (Coast
of Peru)
–
–
–
12.3; 9.2
–
8.2
Sunda and Hanson
(1987)
Cu 2+
with DOM (Sargasso
Sea)
–
–
–
13.2; 9.7
–
?
Moffett et al. (1990)
Cu 2+
with DOM (North Pacific) –
–
–
13.0; 10.0
–
?
Coale and Bruland
(1988)
Cu 2+
with DOM (South Atlantic)
–
–
–
12.2; 10.2
–
7.7
van Den Berg (1984)
Cu 2+
with DOM (equatorial
Pacific)
–
–
–
8.92–9.26 (K
1 );
6.87–7.44 (K
2 )
–
8.15
Midorikawa and
Tanoue (1996,
1998)
Cu 2+
(groundwater)
–
5.60
–
–
–
Kim et al. (1990)
Hg 2+
with isolated hydrophobic
fraction of DOM (Florida
Everglades surface waters)
–
–
–
11.6–12.0 (K
1 );
10.5–10.9 (K
2 )
–
Benoit et al. (2001)
Mn 2+
–
0.40
–
–
–
7
Takahashi et al. (1997)
Co 2+
–
0.50
–
–
–
7
Takahashi et al. (1997)
Zn 2+
with humic acid,
sewage sludge (Ex/
Em
= 340/438 nm)
–
4.08
–
–
–
8.1
Plaza et al. (2006)
Zn 2+
with humic acid, soil
(Ex/Em
= 440/510 nm)
–
4.43
–
–
–
8.1
Plaza et al. (2006)
Zn 2+
with humic acid, amended
soil
+ sewage sludge
(Ex/Em
= 440/510 nm)
–
4.31
–
–
–
8.1
Plaza et al. (2006)
Table 1 (continued)
(continued)