RetentionTime
Pesticide
(min.)
1,2-dibromo-3-chloropropane
1.96
hexachlorocyclopentadiene
3.06
2,4,5,6-tetrachloro-
m
-xylene (ss)
4.64
cis
-diallate
4.76
trans
-diallate
4.86
α
-BHC
5.02
hexachlorobenzene
5.10
γ
-BHC
5.32
ß-BHC
5.55
δ
-BHC
5.79
RetentionTime
Pesticide
(min.)
heptachlor
5.87
aldrin
6.21
isodrin
6.58
heptachlor epoxide
6.70
2,4'-DDE
6.89
γ
-chlordane
7.12
α
-chlordane
7.19
endosulfan I
7.26
4,4'-DDE
7.40
2,4'-DDD
7.55
RetentionTime
Pesticide
(min.)
dieldrin
7.65
chlorobenzilate
7.80
endrin
8.05
2,4'-DDT
8.09
4,4'-DDD
8.27
endosulfan II
8.48
Kepone
8.53
endrin aldehyde
8.65
4,4'-DDT
8.76
endosulfan sulfate
9.07
methoxychlor
9.38
endrin ketone
9.63
Mirex
10.25
decachlorobiphenyl (ss)
11.36
Table1
Retention times for extended list of organochlorine pesticides on an Rtx
®
-XLB column.
1. 1,2-dibromo-3-chloropropane
2. hexachlorocyclopentadiene
3. 2,4,5,6-tetrachloro-
m
-xylene (ss)
4.
cis
-diallate
5.
trans
-diallate
6.
α
-BHC
7. hexachlorobenzene
8.
γ
-BHC
9.
β
-BHC
10.
δ
-BHC
11. heptachlor
12. aldrin
13. isodrin
14. heptachlor epoxide
15. 2,4'-DDE
16.
γ
-chlordane
17.
α
-chlordane
18. endosulfan I
19. 4,4'-DDE
20. 2,4'-DDD
21. dieldrin
22. chlorobenzilate
23. endrin
24. 2,4'-DDT
25. 4,4'-DDD
26. endosulfan II
27. Kepone
28. endrin aldehyde
29. 4,4'-DDT
30. endosulfan sulfate
31. methoxychlor
32. endrin ketone
33. Mirex
34. decachlorobiphenyl (ss)
GC_EV00721
Rtx
®
-XLB 30m, 0.32mm ID, 0.5µm (cat.# 12839)
Sample:
8081A pesticides, 80-160ppb in hexane
Inj.:
1.0µL splitless (hold 0.75min.), 4mmDrilledUniliner
®
inlet liner (cat.# 21055)
Inj. temp.:
220°C
Carrier gas:
hydrogen, constant pressure
Linear velocity: 60cm/sec.@ 120°C
Oven temp.:
120°C (hold 0.5min.) to 260°C@ 29°C/min. (hold 2.5min.),
to 330°C@ 28°C/min. (hold 3min.)
Det.:
ECD@ 320°C
Sample Components
8081A Pesticides/Surrogates
8080Organochlorine PesticideMix AB#2 (20 components)
(cat.# 32292)
8081aOrganochlorine PesticideMix C#2 (7 components)
(cat.# 32295)
2,4'-DDT
(cat.# 32200)
2,4'-DDD
(cat.# 32098)
2,4'-DDE
(cat.# 32099)
Kepone
(custom)
Mirex
(custom)
2,4,5,6-tetrachloro-
m
-xylene (ss, 20ppb)
(cat.# 32027)
decachlorobiphenyl (ss, 40ppb)
(cat.# 32029)
ResolveComplexMixturesofOrganochlorinePesticides
Figure4
Complexmixof organochlorinepesticides resolvedonanRtx
®
-XLB column.
Rtx
®
-XLB 30m, 0.32mm ID, 0.5µm (cat.# 12839)
Sample:
US EPAMethod 8081A pesticides, 80-160ppb in hexane
Inj.:
1.0µL splitless (hold 0.75min.), 4mmDrilledUniliner
®
inlet liner (cat.# 21055)
Inj. temp.:
220°C
Carrier gas:
hydrogen, constant pressure
Linear velocity: 60cm/sec.@ 120°C
Oven temp.:
120°C (hold 0.5min.) to 260°C@ 29°C/min. (hold 2.5min.), to 330°C@ 28°C/min. (hold 3min.)
Det.:
ECD@ 320°C
