Chemistry Reference
In-Depth Information
I
(
m
A)
110
90
70
50
30
(B)
10
(A)
-10
-1.5
-1.0
-0.5
0
0.5
1
1.5
E
(V) vs. Ag
|
AgCl
-30
(C)
-50
12.7
Voltammetric curves of the electrodeposition of [Fe(II)TSPc]
4
-
at a
carbon-fibre electrode in pH
=
7.4 buffer containing 1
¥
10
-
3
mol l
-
1
[Fe(II)TSPc]
4
-
;
v
=
100 mV s
-
1
; number of scans is 25.
SO
3
-
N
N
SO
3
-
N
Fe
N
N
SO
3
-
N
N
N
SO
3
-
12.8
Scheme of the structure of [Fe(II)TSPc]
4
-
.
12.3.4 Sulphite and sulphur dioxide in 1.0 mol l
-
1
H
2
SO
4
Figure 12.9 shows current-potential curves, recorded at carbon-fibre elec-
trodes modified with [Fe(II)TSPc]
4-
, with increasing concentrations of
sulphur dioxide in a 1.0 mol l
-1
H
2
SO
4
solution. Similar curves were obtained
