Environmental Engineering Reference
In-Depth Information
TABLE 6.4 (Continued)
Properties
of
Different
Classes
of
Pesticides
K
ow
log P
(25°C)
Vapor Pressure
(mPa) (25°C)
Water Solubility
(mg/L) (25°C)
Half-Life in
Soil (days)
Common Name
Carbofuran
0.031
a
1.52
320
a
30-60
Carbosulfan
0.041
0.35
2-5
Fenoxycarb
8.67×10
−4
4.07
7.9
31
Methomyl
0.72
0.093
57,900
5-45
Oxamyl
0.051
−0.44
280,000
7
Pirimicarb
0.4
a
1.7
3000
a
7-234
Organochlorine insecticides
Aldrin
3.08
a
5.0-7.4
<0.05
365
p,p′-DDT
0.025
a
6.19-6.91
0.0055
2000
Dieldrin
0.4
a
4.32-5.40
0.186
1000
Dicofol
0.053
a
4.28
0.8
45
Endosulfan
0.83
a
4.74
0.32
d
30-70
γ-HCH
4.4
e
3.5
8.5
400
Methoxychlor
<1
a
—
0.1
120
Tetradifon
3.2×10
−5a
4.61
0.078
a
—
Organophosphorus insecticides
Azinphos-methyl
5×10
−4a
2.96
28
a
10-40
Chlorfenvinphos
1
3.85
145
—
Chlorpyrifos
2.7
4.7
1.4
35-56
Chlorpyrifos-methyl
3
4.24
2.6
a
1.5-33
Coumaphos
0.013
a
4.13
1.5
a
—
Diazinon
12
3.30
60
a
11-21
Dichlorvos
2.1×10
3
1.9
18,000
a
0.5
Dimethoate
0.25
0.704
23,800
a
2-4
Fenitrothion
18
a
3.43
14
12-28
Fenthion
1.4
4.84
4.2
a
34
Malation
1.1
a
2.75
145
1
Methamidophos
2.3
a
−0.8
>2×10
5a
6
Methidathion
0.25
a
2.2
200
3-18
Oxydemeton-methyl
3.8
a
−0.74
1×10
6a
2-20
Phosmet
0.065
2.95
25
4-20
Pirimiphos-methyl
2
a
4.2
10
a
3.5-25
Profenofos
0.12
4.44
28
7
Trichlorfon
0.5
0.43
1.2×10
5a
5-30
Pyrethroid insecticides
Acrinathrin
4.4×10
−5a
5.6
≤0.02
5-100
Cyfluthrin
Diastereoisomer
I:9.6×10
−4a
II:1.4×10
−5a
III:2.1×10
−5a
IV:8.5×10
−5a
56-63
I:6
II:5.9
III:6
IV:5.9
I:2.2×10
−3a
II:1.9×10
−3
III:2.2×10
−3
IV:2.9×10
−3
Cypermethrin
2×10
−4a
6.6
0.004
60
(
continued
)
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