FormNo. 203-821-244 01/05-REV0
LECO is a registered trademark of LECO Corporation
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Figure2.
Separation of HCHs withGCxGC-ECD. Beta- and gamma-HCH coelute in the first
dimension on Rtx-5, but are easily separated in the second dimensionwith Rtx-200.
Figure3.
Surface plot of organochlorine pesticidemix analyzedwithGCxGC-ECD. The first
dimension retention time is for the Rtx-5 separation, and the second dimension retention time is
for the Rtx-200 separation. In addition, there is a Z-axis which represents ECD response for the
pesticides.
alpha
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beta
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gamma
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delta-
