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
Zn
2
+
-
0.50
-
-
-
7
Takahashi et al.
(1997
)
Cr
3
+
-
6.00
-
-
-
7
Takahashi et al.
(1997
)
Fe
3
+
-
10.0
-
-
-
7
Takahashi et al.
(1997
)
Sc
3
+
-
15.0
-
-
-
7
Takahashi et al.
(1997
)
+
VO
2
-
2.1
-
-
-
7
Takahashi et al.
(1997
)
Hg
2
+
with stream humic sub-
stances (peak C: 340-
355/430-455 nm)
4.34-5.20
-
-
-
-
7.92
Fu et al. (
2007
)
Hg
2
+
with river fulvic acid
(peak A: 245/432-438 nm)
5.62-5.72
-
-
-
7.92
Fu et al. (
2007
)
Hg
2
+
with river fulvic acid
(peak C: 330-335/426-
434 nm)
5.01-5.55
-
-
-
-
7.92
Fu et al. (
2007
)
Hg
2
+
with stream DOM
4.34-5.2
-
-
-
4.37-
7.01
Wu et al. (
2004
)
Hg
2
+
with surface waters
-
-
-
21.2-30.2
-
7
Hsu and Sedlak
(2003
)
Hg
2
+
with hydrophobic acid
extracted from Florida
Everglades surface waters
-
-
-
26-31
-
7
Gasper et al.
(2007
)
Hg
2
+
with hydrophobic acid
-
-
-
25.5
-
7
Haitzer et al.
(2002
)
Hg
2
+
with hydrophobic acid
-
-
-
19.8
-
6
Benoit et al. (
2001
)
Hg
2
+
with peat DOC (Florida
Everglades peats)
-
-
-
23.2
-
6
Drexel et al. (
2002
)
Hg
2
+
with tryptophan (peak T:
-
-
4.99-5.33
-
7.92
Fu et al. (
2007
)
