INFICON Explorer Portable Gas Chromatograph - Manual (Page 293)

Explorer Operator Manual
291
Compound Elution Order
The following tables list the elution order and typical retention times for all Assay 1
compounds on each column. This information will be needed if you are customizing
the standard method. Heavy compounds, such as 1,2-Dichlorobenzene, are not
generally analyzed on the more retentive Columns B and C, since retention times
will be unacceptably long.
The information in these tables is for reference only. Retention times will vary on
your instrument, and exact retention times for your instrument, are contained in the
Assay1.app file.
Compounds with retention times differing by 6% or less are defined as co-elutions
and are indicated as such in the tables. Some compounds identified as co-elutions
may be resolved on your instrument.
Also indicated are the compounds that are optimally detected with an ECD, these
compounds may also be detected on the PID with reduced sensitivity.
Column A Elution Order
Compound ECD R.T. (S) Co-elution
Vinyl Chloride 59 Yes
Chloromethane 59 Yes
Bromomethane 63 Yes
Acetone 68 Yes
1,1-Dichloroethylene 68 Yes
Dichloromethane 72 Yes
Carbon Disulfide 73 Yes
Chloroethane 73 Yes
t-1,2-Dichloroethylene 74 Yes
Vinyl Acetate 77 Yes