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10
7
Cys
10
6
His
10
5
Pro
10
4
Gly
10
3
10
2
10
1
Butylamine
10
0
10
-1
10
-2
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
pH
Figure 4.14.
Rate constants (
k
, /M/s) of reaction of some amino acids and butylamine
with O
3
in water (data were taken from Pryor et al. [223]). See color insert.
2.0
2.0
Pro
1.6
1.6
1.2
1.2
Gly
0.8
0.8
0.4
0.4
0.0
0.0
0.000
0.002
0.004
0.006
0.008
(K
a2
/[H
+
])
Figure 4.15.
Plot of
k
(/M/s) versus (
K
a2
/[H
+
]) for oxidation of gly and Pro by O
3
(adapted from Sharma and graham [15]). See color insert.
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