Environmental Engineering Reference
In-Depth Information
Table 1 (
continued)
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
+
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 autochtho-
nous 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
)