CHAPTER 9 . Binding Ability of Inorganic Major Components of Sea Water
229
Table 9.6. Empirical parameters for the dependence on salinity of the apparent protonation constants
of carboxylic ligands
Ligand
logT t1;
•
•
a
0,
°2
°3
ae
4.75
-0.134
0.0213
-0.0015
mal
5.70
-0.423
0.0561
-0.0027
2
8.57
-0.550
0.0732
-0.0038
suee
5.64
-0.297
0.0419
-0.0021
2
9.85
-0.434
0.0631
-0.0036
mala
5.10
-0.301
0.0411
-0.0021
2
8.57
-0.439
0.0652
-0.0038
tar
4.43
-0.308
0.0411
-0.0020
2
7.46
-0.434
0.0603
-0.0033
aza
5.49
-0.268
0.0508
-0.0031
2
10.04
-0.398
0.0657
-0.0040
toda
1
4.25
-0.337
0.0459
-0.0023
2
7.56
-0.462
0.0629
-0.0034
tea
1
6.49
-0.434
0.0680
-0.0041
2
11.40
-0.608
0.0880
-0.0050
3
15.09
-0.602
0.0749
-0.0040
mtea
7.58
-0.439
0.0607
-0.0035
2
12.71
-0.630
0.0773
-0.0039
3
16.13
-0.634
0.0682
-0.0034
Ligand
logT t1;
b b
,
b b
2
b b
0
bte
7.18
0.0096
74
0.0720
2
13.01
0.0135
43
0.0720
3
17.54
0.0154
29
0.0720
4
20.92
0.0160
23
0.0720
mit
1
7.85
0.0097
2.2 X10 s
0.0396
2
14.30
0.0103
7.5 xl 0 4
0.0396
3
19.39
0.0192
4.8x10 4
0.0396
4
22.86
0.0262
2.3 xl 0 4
0.0396
~ Eq. 9.4.
Eq.9.5.
Values of empirical parameters ai' a2' a3' bo, bl and b2, are reported in Table 9.6.
As concerns the empirical parameters of Eq. 9.4 for mono-, di- and tri-carboxylic
ligands, we observed a regular trend as a function of z*, according to the simplest re-