Problem With Peak Bordening In GC-PFPD
Posted: Wed Aug 10, 2005 5:39 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.