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There are several reasons why the GC Headspace Sampler can see peaks when entering a blank sample so that you can see peaks in the blank. Some reasons may be that
The bottle or lid is dirty.
Laboratory air may be contaminated with organic solvent vapors. This is common when there is a high pressure liquid chromatograph in the sample preparation area.
GC system contamination.
Dirty pillars and / or septa.
Consider these headspace sampler resolution steps.
Bake the bottles and septa in the oven.
Always use very clean vials. The bottle can be purged with a clean inert gas just before the sample is injected.
After cleaning the bottles and septa, dry them in the oven.
Purge the bottle with a clean inert gas such as argon or nitrogen while preparing the sample.
Clean the headspace sampler with airflow. Please see "Steam Cleaning the Pneumatic System" in the manual.
Do a blank GC run; clean the GC injector, detector, and aging column.
Heat the graphite gasket with flame before use.
If the problem persists, please contact your nearest Agilent service hplc vials manufacturer in china.
This is the end of the introduction of Common problems and solutions when the headspace sampler enters the blank sample. I hope it can help you.
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