Contamination peaks are present in my chromatogram when I analyze a sample with the Shimdazu QP 2010+. How can I remove them?

Applies to: Chromatography QP2010 GCMS (GC/MS) | Tickets Solved: 0 | Rank: 10

Contamination Peaks

• If contamination is experienced during runs, the user may conduct a column bake-out on the Shimadzu column to rid any unwanted compounds.
• To do so, please see the document titled “Column Bake-Out” attached below.
• If the contamination is still present after completing the bake-out, the source of the contamination may be from one of several places.
• The user must replace the following items to ensure the contamination is removed:
  1. Stock DCM solution
  2. Syringe used to transfer DCM into vials
  3. Syringe used to make up the Standard Solution
  4. Syringe used on the AOC-5000 auto-sampler
  5. Wash station vials
  6. Waste station vials
  7. Septum
• If after completing a bake-out and replacing all of the above mentioned items the contamination is still present, then the user may replace the Shimadzu column.

Contact technical support if further assistance is needed

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Keywords: contamination, dirty, column, peaks, chromatogram, "bake-out"