Insecticides and herbicides in soils 95
mAU
(E)
20
15
10
5
0
mAU
17.5
15
12.5
5
2.5
10
7.5
0
(F)
mAU
17.5
15
12.5
5
2.5
10
7.5
0
(G)
0
2
4
6
8
10
12
14
16
18
min
0
2
4
6
8
10
12
14
16
18
min
0
2
4
6
8
10
12
14
16
18
min
Figure 3.11 Chromatograms of (E) control soil sample; (F) fortified soil at 0.01 mg kg
−1 , (G) fieldtreated soil at 28 days.
Reprinted from H.Wang et al, International Journal of Environmental Analytical Chemistry, 2007,
87, 99, © 2007 Taylor and Francis [259].
Tadeo et al [276] described methods for the determination of various herbicides and insecticides belonging to different chemical groups. In soil the method was
based on the sonication-assisted extraction in small columns (SAESC) of pesticides
using ethyl acetate. All pesticides were determined by capillary gas chromatography with electron-capture detection (GC-ECD) and their identity was confirmed by
gas chromatography coupled with mass spectrometry (GC-MS). Recoveries obtained
mAU
(E)
20
15
10
5
0
mAU
17.5
15
12.5
5
2.5
10
7.5
0
(F)
mAU
17.5
15
12.5
5
2.5
10
7.5
0
(G)
0
2
4
6
8
10
12
14
16
18
min
0
2
4
6
8
10
12
14
16
18
min
0
2
4
6
8
10
12
14
16
18
min
Figure 3.11 Chromatograms of (E) control soil sample; (F) fortified soil at 0.01 mg kg
−1 , (G) fieldtreated soil at 28 days.
Reprinted from H.Wang et al, International Journal of Environmental Analytical Chemistry, 2007,
87, 99, © 2007 Taylor and Francis [259].
Tadeo et al [276] described methods for the determination of various herbicides and insecticides belonging to different chemical groups. In soil the method was
based on the sonication-assisted extraction in small columns (SAESC) of pesticides
using ethyl acetate. All pesticides were determined by capillary gas chromatography with electron-capture detection (GC-ECD) and their identity was confirmed by
gas chromatography coupled with mass spectrometry (GC-MS). Recoveries obtained