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- Posts: 33
- Joined: Wed Dec 08, 2004 4:16 am
Dear all,
I am using GC with Pulsed Flame Photometric Detector for the analysis of organophosphorus pesticide residue. Recently, I have a problem with the chromatogram that I get, where all the analytes peak will have a small litte bump in front of it, I try to trim my column front and replace the liner and septa, but it doesn't solve the problem. I changed the gold seal and trim the column end, but the problem still the same. I prepared a fresh standard (in acetone) to test on the system, the problem still remained.
Anyone has come across this problem, please help me.
Thanks.
The column is being use since a month ago and there was no problem before this.
I am using GC with Pulsed Flame Photometric Detector for the analysis of organophosphorus pesticide residue. Recently, I have a problem with the chromatogram that I get, where all the analytes peak will have a small litte bump in front of it, I try to trim my column front and replace the liner and septa, but it doesn't solve the problem. I changed the gold seal and trim the column end, but the problem still the same. I prepared a fresh standard (in acetone) to test on the system, the problem still remained.
Anyone has come across this problem, please help me.
Thanks.
The column is being use since a month ago and there was no problem before this.
