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Chromatographic scince series - Cazes J.

Cazes J. Chromatographic scince series - Marcel Dekker, 1996. - 1098 p.
ISBN 0-8247-9454-0
Download (direct link): Đühromatography1996.pdf
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Table 2 Organochlorine Insecticides
Compound
Stationary phase
HCB
DDE
DDT
HCH
Methoxychlor
B[a]p
pp' -DDT
Silica gel G
Silica gel-cellulose acetate-aluminia (1:2:1)
op'-DDT Aldrin
Endrin
Dieldrin
op'-DDD
Alumina ┬ (Woelm)
op'-DDE pp'-DDD mp'-DDD a-chlordan Other OCs
2.4-dichlorophenol (DCP)
2.3.4-trichlorophenol (TCP)
2.4.5-TCP
2.4.6-TCP Pentachlorophenol
(PCP)
Methoxychlor
Silica gel Silufol
Mobile phase
Acetone-hexane
(2:8)
Hexane: EtOAc
Hexane-bcnzene-EtOAc (6:4:1)
Hexanc-acctone (40:10)
pp' -DDT
Limit of detection
Detection Rt x 100 (/ug) Sample Ref.
AgNO, 10"' Water 47
3-Methvlbenzidine
N. iV-dimethvlbenzidine
o-Toluidine
70
72
82
80
iV.iV-tetramethylbenzidine 68
65
3,5-3',5'- 59
Tetramethylbenzidine
73
60
59
37
51
Tree bark 48 Foliage
1.0
0.2
1 - 2 Water 49
0.5-5.0 Poultry 50
Meat Liver
AgNO,
NHjOH
59
45
65
16
52
0.05
0.05
Water
51
Pesticides 763
Table 2 (continued)
Limit of
detection
Compound Stationary phase Mobile phase Detection : X (Mg) Sample Ref.
│ 5
1 0
op' -DDT 65 0.10
pp' -DDE 87 0.08
op'-DDE 68 0.08
pp'-DDD 33 0.02
DDMU 76 0.06
Ľy-HCH 25-58 0.10
Toxaphen 39 0.30
Dieldrin 85 0.30
Aldrin 43 0.30
Endrin 16 0.20
Methoxychlor Heptane-acetone 32
(70:30)
Dicofoel 39
DDT Silica gel 60 Hexane-ether Diphenylamine 73 0.02 Plant 53
(85: 15)
DDE HPTLC (Merck) 83
╬Đ, OP Alumina Ű-Hexane: acetone AgNO, + UV TMB + UV 53c Tea 53b
(9: 1), conc. H2S04
Methoxychlor Silica gel 60 Multiple gradient 1 10
Dieldrin HPTLC F2,4 development (mm) 15 15
a-endosulfan (Merck) n-heptane: CH2C12 50 2
Lindane /prewashed (1) 55:45 5 5 14
p,p'-DDD with CH2C12- (2) 65:35 . 15 25 28
p,p'-DDT MeOH (1 : 1) (3) 75:25 1 3 42
p,p'-DDE (4) 85:15 5 10 56
Aldrin (5) 95:5 10 25 70
764 Fodor-C
Pesticides
765
┬. Organophosphorus Insecticides
The organophosphorus (OP) insecticides are very toxic to warm-blooded beings but less persistent than the ╬Đ compounds. Although their breakdown is more rapid in the environment compared to the above-mentioned ╬Đ insecticides, they are stable enough to act as insecticides (54). Their chemical structure can be characterized by the general formulas shown in Fig. 2.
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