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- Posts: 59
- Joined: Thu Aug 02, 2007 3:19 pm
I am having some problems recovering low for cis-1,2-Dichloroethene in proficiency samples. I am doing a 5mL purge and running on an 8100 archon as a soil. I use a K trap and am running on a 6890/5975 agilent system with a DB624 column (20m/0.18/0.18). All other analytes within the regulated compound list recovers fine (some are exactly 100% recovery) except for this one. It is recovering around 75%. I run a primary and secondary source and have also checked the system with a tertiary source and they all recover within 15%. I am at a loss and am trying to see what I can change to make this analyte recover.
This is a new problem for the last 2 proficiencies, before that I had never had a failure for this compound.