GCMS- Octane usage

[itsbourne]

Hi,

I am new for usage of GCMS. Usually we are using dichloromethane (DCM) for extration of PAHs.

Now I have a sample with PAHs but has ocatne as solvent. So can I inject octane directly?? Should I take any precautions?

Thanks In advance,
Jason

[chromatographer1]

It should not be a problem injecting octane. Very inert solvent compared to DCM. Your MS may stay clean longer with octane.

best wishes,

Rod

[Peter Apps]

The octane will probably elute later than dichloromethane, so you might need to increase the time for which the fialment is switched off.

Peter

[chromatographer1]

Good point Peter, but doing PAHs I am sure itsbourne has quite a delay already. But a reminder never hurts.

Rod

[AICMM]

itsbourne,

With or without naphthalene? That will be the challenging one with iso-octane.

Best regards,

AICMM