Compound separation – INFICON Explorer Portable Gas Chromatograph User Manual
Page 309
Explorer Operator Manual
307
Compound Separation
Separation of the 9 compounds is accomplished in one run on Column B. Column A
acts as the precolumn.
The sample is injected onto Column A and any heavy compounds, present in the
sample, are prevented from entering Column B by adjusting the backflush time, and
only the lighter compounds are allowed to pass from Column A to Column B.
Before the heavy compounds are able to pass into Column B, the flow is reversed,
and the heavy compounds are backflushed out of Column A.
Some separation of compounds occurs on Column A, with the majority of the
separation occurring on Column B, as shown in Figure 27.
Figure 27 Assay 2 Compounds Run on Column B
Compound Library
Assay Compounds
One compound library is installed in
Explorer for Column B. The library
contains retention time and response information for each assay compound.
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