785
Complexation of Dissolved Organic Matter with Trace Metal Ions in Natural Waters
(continued)
H
+ with humic acid of various
sources
–
7.15–9.80 (K
1 );
2.80–4.94 (K
2 )
–
–
–
Vidali et al. (2009)
Be 2+
–
4.0
–
–
–
7
Takahashi et al. (1997)
Ca 2+
–
1.0
–
–
–
7
Takahashi et al. (1997)
Ca 2+
with alpha-isosaccharinate –
–
–
–
1.70–1.80
van Loon et al. (2004)
Sr 2+
–
0.5
–
–
–
7
Takahashi et al. (1997)
Ba 2+
–
0.5
–
–
–
7
Takahashi et al. (1997)
Ga 3+
–
10.0
–
–
–
7
Takahashi et al. (1997)
Transition metals
Cu 2+
with river DOM/humic
substances
7.0–8.1 (K
1 ); 5.4–6.1
(K
2 )
–
–
–
–
?
Breault et al. (1996)
Cu 2+
with river and canal
DOM/humic substances
8.3–8.5 (K
1 ); 6.0–6.6
(K
2 )
–
–
–
–
?
Mcknight et al.
(1983)
Cu 2+
with river fulvic acid (Ex/
Em
= 315–330/426–434 nm)
7.21–7.31 (K
1 )
–
–
–
–
?
Wu et al. (2001)
Cu 2+
5.3
–
–
–
–
6
Konstantinou et al.
2009
Cu 2+
with lake autochthonous
fulvic acid (M-like: 310–
320/376–386 nm) at 2.5 m
7.84–7.96 (K
1 )
–
–
–
–
?
Wu et al. (2001)
Cu 2+
with lake autochthonous fulvic acid (M-like:
250/414–438 nm) at 2.5 m
7.06–7.67 (K
2 )
–
–
–
–
?
Wu et al. (2001)
Cu 2+
with lake autochthonous
fulvic acid (M-like: 310–
320/376–386 nm) at 70 m
9.23 (K
1 )
–
–
–
–
?
Wu et al. (2001)
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
Table 1 (continued)