- #1
lilrex
- 64
- 0
I have a project that I want to do; really it is an experiment that would prove useful to another project of mine.
I want to build a gas chromatograph.
The specs.
Capillary column
Helium carrier
Thermal Conductivity Detector
The analyte is a mixture of CH4,N2 (for now)
I already have the TCD made and it is functioning well, I just need some info on the capillary.
Question: what will work well enough for a capillary column? Can I use a copper capillary as used for refrigeration? I know that the norm is a capillary that has a coating on the inside with a Stationary phase but will the walls of a copper or glass capillary suffice in this function? I suspect it all has do with the degree of separation that is needed but I am looking for some guidelines in this respect, just some empirical guidelines to help me get started.
Probably for one to make a recommendation I might give some more information I just need to make an approximation as to the quantity of the components in the anilyte, rarely would I even need to separate a complicated mixture just the simple one that I exemplified.
I guess that I could just buy some capillary and experiment but I just wanted your opinion on the matter.
Thanks, Cheers!
I want to build a gas chromatograph.
The specs.
Capillary column
Helium carrier
Thermal Conductivity Detector
The analyte is a mixture of CH4,N2 (for now)
I already have the TCD made and it is functioning well, I just need some info on the capillary.
Question: what will work well enough for a capillary column? Can I use a copper capillary as used for refrigeration? I know that the norm is a capillary that has a coating on the inside with a Stationary phase but will the walls of a copper or glass capillary suffice in this function? I suspect it all has do with the degree of separation that is needed but I am looking for some guidelines in this respect, just some empirical guidelines to help me get started.
Probably for one to make a recommendation I might give some more information I just need to make an approximation as to the quantity of the components in the anilyte, rarely would I even need to separate a complicated mixture just the simple one that I exemplified.
I guess that I could just buy some capillary and experiment but I just wanted your opinion on the matter.
Thanks, Cheers!