FormNo. 203-821-244 01/05-REV0
LECO is a registered trademark of LECO Corporation
3
Figure1.
Contour plot (GCxGC chromatogram) of organochlorine pesticidemix. Note the
separation of compounds in two dimensions with the Rtx-5 separation (and retention time) on the
X-axis, and the Rtx-200 separation occurring along the Y-axis.
Table1.
Retention times (RTs) for OCPs via GCxGC-ECD.
Pesticide
RT1 sec (Rtx-5)
RT2 sec (Rtx-200)
Tetrachloro-m-xylene
294
1.90
alpha-HCH
342
2.44
beta-HCH
378
2.96
gamma-HCH
384
2.66
delta-HCH
420
2.94
Heptachlor
480
2.52
Aldrin
534
2.58
Heptachlor epoxide
606
3.16
gamma-Chlordane
648
2.96
Endosulfan I
672
3.32
alpha-Chlordane
678
2.96
Dieldrin
720
3.34
4,4’-DDE
732
2.72
Endrin
756
3.46
Endosulfan II
780
3.78
4,4’-DDD
810
3.18
Endrin aldehyde
816
4.50
Endosulfan sulfate
864
5.20
4,4’-DDT
882
2.96
Endrin ketone
942
4.68
Methoxychlor
1008
2.82
Decachlorobiphenyl
1320
2.62
HCHs
H
H
e
e
ptachlor
Aldrin
Heptachlor
epoxide
gamma-
Chl
l
ordane
Endosulfan I
Dieldrin
Endrin
Endosulfan II
Endrin aldehyde
DDT
DDD
Endosulfan sulfate
Endrin ketone
Methoxychlor
TCMX
alpha-
Chlordane
DDE
PCB 209
