Table 1.
Zn isotope compositions of pure Zn reference materials, relative to IRMM-3702 Zn
| Reference material | Reference | δ66/64Zn (‰) | 2sd | 2se | n | m |
|---|---|---|---|---|---|---|
| London Zn | This study: unprocesseda | −0.22 | 0.08 | 0.04 | 4 | |
| This study: processed | −0.20 | 0.08 | 0.03 | 8 | 5 | |
| This study: all | −0.20 | 0.07 | 0.02 | 12 | ||
| Moeller et al. 2012 [58] | −0.19 | 0.06 | 0.02 | 10 | ||
| JMC Lyon | This study | −0.32 | 0.06 | 0.02 | 10 | |
| Archer et al. 2017 [59] | −0.29 | 0.09 | 0.01 | 110 | ||
| Moeller et al. 2012 [58] | −0.30 | 0.05 | 0.02 | 5 | ||
| Van Heghe et al. 2012 [26] | −0.30 | 0.04 | 0.01 | 24 |
The 2sd and 2se values were calculated from repeat analyses of the RMs. The total number of measurements for each RM and the number of individual sample aliquots that were processed through separation chemistry are denoted by ‘n’ and ‘m’, respectively
aLondon Zn that was not ‘processed’ through the anion exchange chromatography procedure