stoichometric oxygen and carbon by difference

[Ben Buse]

Hi

Does DTSA-II allow oxygen to be calculated stoichiometrically and carbon calculated by difference for carbonate spectra?

[Ben Buse]

To further expand on this

I've now quantified Smithsonian dolomite using a calcite and MgO standard and C by difference - because carbon coated

Result as follows
Sum 1
C 0.0968
O 0.5498
Mg 0.1339
Ca 0.2195

So too much Oxygen and not enough C, I'd like to try oxygen by stoichiometry and carbon by difference but only choice of one or other

Thanks