Kenji Shimizu, Yuichiro Ueno, Takayuki Ushikubo. “Optimising TC/EA–IRMS hydrogen isotope measurements of volcanic glass: a correction for low-H2 signal bias and application to SIMS calibration .” ChemRxiv (2026 ). https://doi.org/10.26434/chemrxiv.15007474/v1
The main paper refers to supporting information, but no separate supporting information file was found among the files available from the ChemRxiv record
6K495-R05 (HW-G1)
TC/EA–IRMS δD (‰, VSMOW)
−60.1
Anhydrous mole weight (g/mol, one-O basis)
37.268
6K490-R02
TC/EA–IRMS sample-weight range (µg)
1331–7782
TC/EA–IRMS H2 range (µmol)
1.21–6.46
TC/EA–IRMS H2O (wt%)
1.55
TC/EA–IRMS δD, H2-amount-dependent correction (‰)
−32.1; 1SD 4.5; n = 11
TC/EA–IRMS δD, H2-independent correction (‰)
−31.1; 1SD 3.7
Anhydrous mole weight (g/mol, one-O basis)
36.863
6K491-R02
TC/EA–IRMS sample-weight range (µg)
3141–9470
TC/EA–IRMS H2 range (µmol)
1.15–3.04
TC/EA–IRMS H2O (wt%)
0.61
TC/EA–IRMS δD, H2-amount-dependent correction (‰)
−74.5; 1SD 3.9; n = 8
TC/EA–IRMS δD, H2-independent correction (‰)
−66.6; 1SD 3.7
Anhydrous mole weight (g/mol, one-O basis)
36.942
6K494-R03
TC/EA–IRMS sample-weight range (µg)
7793–14170
TC/EA–IRMS H2 range (µmol)
4.13–7.40
TC/EA–IRMS H2O (wt%)
0.94
TC/EA–IRMS δD, H2-amount-dependent correction (‰)
−82.5; 1SD 2.5; n = 5
TC/EA–IRMS δD, H2-independent correction (‰)
−79.8; 1SD 3.8
Anhydrous mole weight (g/mol, one-O basis)
37.377
6K495-R07 (HW-G2)
TC/EA–IRMS sample-weight range (µg)
4940–17336
TC/EA–IRMS H2 range (µmol)
2.64–9.18
TC/EA–IRMS H2O (wt%)
0.95
TC/EA–IRMS δD, H2-amount-dependent correction (‰)
−58.8; 1SD 1.6; n = 6
TC/EA–IRMS δD, H2-independent correction (‰)
−56.6; 1SD 2.8
Anhydrous mole weight (g/mol, one-O basis)
37.288
6K446-R03 (IND-G2)
TC/EA–IRMS powder sample-weight range (µg)
6534–16288
TC/EA–IRMS powder H2 range (µmol)
1.82–4.34
TC/EA–IRMS powder H2O (wt%)
0.49
TC/EA–IRMS powder δD, H2-amount-dependent correction (‰)
−57.7; 1SD 2.4; n = 5
TC/EA–IRMS powder δD, H2-independent correction (‰)
−53.9; 1SD 2.9
TC/EA–IRMS chip sample-weight range (µg)
4699–8748
TC/EA–IRMS chip H2 range (µmol)
1.29–2.20
TC/EA–IRMS chip H2O (wt%)
0.47
TC/EA–IRMS chip δD, H2-amount-dependent correction (‰)
−55.1; 1SD 2.7; n = 4
TC/EA–IRMS chip δD, H2-independent correction (‰)
−50.4; 1SD 2.0
TC/EA–IRMS combined powder and chip δD (‰, VSMOW)
−56.5
Anhydrous mole weight (g/mol, one-O basis)
36.286
6K1203-R24
TC/EA–IRMS sample-weight range (µg)
4127–16112
TC/EA–IRMS H2 range (µmol)
1.84–6.60
TC/EA–IRMS H2O (wt%)
0.79
TC/EA–IRMS δD, H2-amount-dependent correction (‰)
−72.7; 1SD 3.3; n = 5
TC/EA–IRMS δD, H2-independent correction (‰)
−68.6; 1SD 4.6
Anhydrous mole weight (g/mol, one-O basis)
36.423