LC column recommendation

Which LC  column is recommended for fuel oils to determine dimer, trimer and tetramers , GPC  analysis?

Parents
  • Dear Tee,

    "fuel oils" is unfortunately a very generic description of a sample, same for "dimers, trimers, ...". The definition for fuel oil says, that it has a carbon number between 11 and 20, with a possible extension to 26 and is normally a mineral oil.

    Some questions need to be answered before there can be any kind of suggestion:

    • What kind of fuel oil do you mean? Mineral oil-based, biodiesel-like, etc.?
    • As for the oligomers: do you mean acid oligomers and if yes, what are the expected length of the side-chains.
    • Are the oligomers linked by in-chain-groups and what are the expected side chain-lengths?
    • I assume the sample is only soluble in some organic solvents?
    • What would be the estimated max. molecular weight? 
    • Does it need to be LC or could it also be GC?

    Please give us a little more insight into the analysis and the sample.

    Regards,

    Norbert

Reply
  • Dear Tee,

    "fuel oils" is unfortunately a very generic description of a sample, same for "dimers, trimers, ...". The definition for fuel oil says, that it has a carbon number between 11 and 20, with a possible extension to 26 and is normally a mineral oil.

    Some questions need to be answered before there can be any kind of suggestion:

    • What kind of fuel oil do you mean? Mineral oil-based, biodiesel-like, etc.?
    • As for the oligomers: do you mean acid oligomers and if yes, what are the expected length of the side-chains.
    • Are the oligomers linked by in-chain-groups and what are the expected side chain-lengths?
    • I assume the sample is only soluble in some organic solvents?
    • What would be the estimated max. molecular weight? 
    • Does it need to be LC or could it also be GC?

    Please give us a little more insight into the analysis and the sample.

    Regards,

    Norbert

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