Cleaning GC Transfer Line From Purge and Trap

Discussions about GC and other "gas phase" separation techniques.

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Could someone give me a rundown of how to clean the GC transferline from the purge and trap? I am struggling to remember how to do that.

My technique, developed for an Agilent 6890 with an OI concentrator, is to cool the line, concentrator 6 port valve and GC inlet. Disconnect on both ends (or include the 6 port valve) and flush with methanol followed by water. Heat the transfer line and flush with hot water. Reassemble and clean the sparge tube, the headspace above, and the inline filter in the concentrator. Do not flush a hot transfer line with a flammable solvent.
This, plus a new trap, will remove the carryover naphthalene from the nastiest creosote laden samples.
2 posts Page 1 of 1

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