• No : 4711
  • Date of Issue : 2020/12/17 16:38
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(GCMS) No peaks appear, or peaks are too small

(GCMS) No peaks appear, or peaks are too small.
Category : 

Answer

Cause 1: Carrier gas flows?
Action 1: If carrier gas is not flowing, please let the carrier gas flow.
 
Cause 2: Carrier gas leaks.
Action 2: Tighten any leaking connections. Click here for Checking for Leaks.
 
Cause 3: Proper column installation.
Action 3: Install the column correctly.
 
Cause 4: Temperature of column, injection port or interface has dropped.
Action 4: Increase the temperature of each heated zone to the appropriate value.
 
Cause 5: Appropriate column selection.
Action 5: Change to an appropriate column (check column polarity, etc.).
 
Cause 6: Split ratio too large.
Action 6: Decrease split ratio.
 
Cause 7: Sample concentration or injection amount too low.
Action 7: Increase sample concentration or inject a greater volume of sample.
 
Cause 8: Filament open (or burned out).
Action 8: Change or replace the filament. Click here for Filament Replacement Procedure.
 
Cause 9: Detector voltage too low.
Action 9: Increase detector voltage gradually.
 
Cause 10: Appropriate analytical conditions.
Action 10: Correct the method parameters.
 
Cause 11: MS properly tuned.
Action 11: Perform autotuning or adjust the instrument.