Carbon and Oxygen (carbonates)

  • δ 13C and  δ18O values of carbonates are determined using a MultiCarb system in line with a GV IsoPrime mass spectrometer in Dual Inlet. Several replicates of the international standard NBS19, and two lab standards (CaCO3 I & II) are analyzed along with the samples for each run. Long term external precisions for C and O are  ± 0.05‰ and  ± 0.07‰, respectively.
  • Sample size: analysis is performed on bulk powder samples containing about 10 to 100 μg calcite or aragonite.

Please contact us directly for shipping instructions.

Use our file “Sample name form for 13C18Ocarbonates” to fill in the names of each sample.