Until this moment we are run d18O and d2H in individual aliquots.
I think that the d18O analysis subsequently to d2H analysis can reduce the work because we only need open the vials to insert the platinum catalyst and to change the caps with new septa. This reduces the work of pipetting of new aliquots and cleaning the vials. Also reduces the use of new aliquots of lab references, we . The identical principle (IT) for treatment of samples and standards is applied in this case. Is it correct?
But, I think that the inconvenient is the frequent change between H2 e CO2 configurations in the Delta V.
I appreciate all the comments about the issue.