Rtx-1>
Rtx-PCB>
153
132
105
Figure1.
Contour plot showing GCxGC-ECD separation of PCBs 105, 132, and 153 in the second
dimension using the selective Rtx-PCB column. The sample is Aroclor 1254.
Conclusions
GCxGC-ECDwith a selective column in the second dimension offers away to substantially improve
separations for complex halogenatedmixtures such as PCBs.
Acknowledgment
Frank Dorman at Restek Corporation provided the GC columns used for this work.
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