Organometallic compounds in saline sediments 207
3
2.5
2
1.5
1
0.5
0
3
2.5
2
1.5
1
0.5
0
10
8
6
4
2
0
10
8
6
4
2
0
30
25
20
15
10
5
0
30
25
20
15
10
5
0
35
30
25
20
15
10
5
0
35
30
25
20
15
10
5
0
60
50
40
30
20
10
0
TK1
TK2
TK3
TK4
TK1
TK2
TK3
TK4
TK1
TK2
TK3
TK4
TK1
TK2
TK3
TK4
TK1
TK2
TK3
TK4
60
50
40
30
20
10
0
TO1
TO2
TO3
TO4
TO1
TO2
TO3
TO4
TO1
TO2
TO3
TO4
TO1
TO2
TO3
TO4
TO1
TO2
TO3
TO4
MANKO ESTUARY
OKUKUBI ESTUARY
NA
MBT
DBT
TNT
M
(N)
IT
(a)
(b)
(c)
(d)
(e)
Concentrations ng (Sn) L -1
Concentrations ng (Sn) L -1
Concentrations ng (Sn) L -1
Concentrations ng (Sn) L -1
Concentrations ng (Sn) L -1
NA
NA
Figure 9.1 Seasonal variations of organotin compounds in waters from the Manko estuary (left) and
Okikubi estuary (right). (a and b: February; c and d:April; e). NA; sample not available.
Reprinted from M. Ali Sheikh et al, International Journal of environmental Analytical Chemistry,
2007, 87, 847, © 2007,Taylor and Francis [37].