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Shimadzu GCMS Maintenance and Troubleshooting

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Jackie Nsd

on 11 February 2014

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Transcript of Shimadzu GCMS Maintenance and Troubleshooting

In autotuning report, intensity of m/z 69 is not more than double that of m/z 28
GCMS-QP2010 series
Maintenance and Troubleshooting
"CAR1 AFC Leak" error message
Baseline drifts, wanders, or is excessively noisy
Appearance of additional peaks which should not have existed
Peak shapes are irregular, rendering it difficult to do quantitation
Carrier Gas
Ghost Peak
Peak Shape
Possible causes:
- Column not properly installed
- Wrong type of ferrule is used
- Injector port is not properly closed
- O-ring of ion source door is damaged or not properly installed
- Sealing surface is scratched or dirty
Possible causes:
- Gas tubing not properly connected
- Carrier gas cylinder empty
- Inlet pressure lower than operating range of AFC
Possible causes:
- Contamination of carrier gas, system or column
- Poor gas flow control
- Poor temperature control
Possible causes:
- Contamination of system or column
- Contamination of consumables
- Bad sample handling or preparation
- Carryover from previous runs
Possible causes:
- Poorly cut column ends
- Incompatible glass liner or column
- Poor injection technique
- Certain compounds almost always cause tailing
Screw tight injector port
Remove the tape / holder
Do a bubble test
Remove holder for detector
Put in nut and ferrule
Put in injector jig
Place either a tape or a used septum to act as holder
Place column into GC oven
Repeat the procedure for MS
Full transcript