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- Posts: 7
- Joined: Mon Jun 21, 2010 1:11 pm
I have been working on getting this system up and running to capture GRO (Fraction 1). I have ran some standards and am getting a good calibration curve but I cannot get a retention time marker to pass. The marker is a purchased solution of 2000 ug/mL diluted to 50ug/mL and it contains 3 compounds n-hexane, toluene, and n-decane. In order for this standard to pass hexane and decane must have area counts within 30% of toluene and right now I am getting low recoveries for decane and peak tailing. Is there anyone that can give me an idea of what to do?
What I have done:
Changed column
increased dector temp by 50 degrees
increased inlet temp by 50 degrees
replaced ferrules
tightend purge and trap vessels