D5: Good practice guide for the analysis of CH₄ source gases for δ13C(CH4) and δ2H(CH4) (part1) or Δ13CH3D and Δ12CH2D2 (part 2) by OIRS and IRMS, including sample handling, purification, optimised analytical procedures and traceability to the international standards and target uncertainties δ13C(CH4): 0.2 ‰, δ2H(CH4): 2 ‰, Δ13CH3D: 0.5 ‰, Δ12CH2D2: 2 ‰.
Good practice guide for the analysis of CH4 source gases for δ13C(CH4) and δ2H(CH4) (part1) or Δ13CH3D and Δ12CH2D2 (part 2) by OIRS and IRMS, including sample handling, purification, optimised analytical procedures and traceability to the international standards and target uncertainties δ13C(CH4): 0.2 ‰, δ2H(CH4): 2 ‰, Δ13CH3D: 0.5 ‰, Δ12CH2D2: 2 ‰.
Physikalisch-Technische Bundesanstalt (PTB). (2025). D5: Good practice guide for the analysis of CH₄ source gases for δ13C(CH4) and δ2H(CH4) (part1) or Δ13CH3D and Δ12CH2D2 (part 2) by OIRS and IRMS, including sample handling, purification, optimised analytical procedures and traceability to the international standards and target uncertainties δ13C(CH4): 0.2 ‰, δ2H(CH4): 2 ‰, Δ13CH3D: 0.5 ‰, Δ12CH2D2: 2 ‰. Physikalisch-Technische Bundesanstalt (PTB). https://doi.org/10.7795/120.20251127E