Table 6. δ74/70Ge Isotope Ratio Values Measured Regarding NIST SRM 3120a (LOT 000411) Using HG-MC-ICPMS with SSB Correction.
| sample | δ74/70Ge, ‰ | 2SD | n | expected δ value |
|---|---|---|---|---|
| NIST SRM 3120a (LOT 000411), extracted | 0.02 | 0.07 | 6 | 0 |
| NIST SRM 3120a (LOT 000411), evaporated and extracted | 0.01 | 0.16 | 3 | 0 |
| synthetic seawater spiked with NIST SRM 3120a (LOT 000411) | –0.03 | 0.12 | 2 | 0 |
| USGS BHVO-2 basalt (reported dissolution method) | 0.51 | 0.05 | 3 | 0.5118 |
| USGS BHVO-2 basalt (alternative dissolution method 1) | 0.53 | 0.02 | 3 | 0.51 |
| USGS BHVO-2 basalt (alternative dissolution method 2) | 0.67 | 0.05 | 4 | 0.51 |
| IF-G iron formation | 1.03 | 0.06 | 4 | 1.03 |
| GH granite | 0.73 | 0.02 | 3 | 0.6818 |
| GL-O glauconite | 2.47 | 0.05 | 3 | 2.4418 |
| KT-1 thermal water | 0.93 | 0.17 | 4 | |
| C-1 thermal water | 1.66 | 0.05 | 3 | |
| DM2 thermal water | 1.17 | 0.19 | 3 | |
| DM5 thermal water | 1.16 | 0.10 | 4 | |
| DM7 thermal water | 1.03 | 0.02 | 2 |