Table 4.
Calculated and observed isotopic ratios of the calibration samples and the observed ratio of the reference sample
| Instr. No. 3 | |||
|---|---|---|---|
| Mixture | Calc ratio | Obs ratio | CF(Calc/obs) |
| 1a | 2.9722 | 3.0514 | 0.97402 |
| 2 | 2.3645 | 2.4251 | .97504 |
| 5 | 2.0632 | 2.1188 | .97374 |
| 7 | .51833 | .53244 | .97350 |
| 9 | 2.2181 | 2.2762 | .97449 |
| Avg. .97416 | |||
| Reference sample avg. 2.3039b
Corrected ratio=2.2443 | |||
| Instr. No. 4 | |||
| 1 | 2.9722 | 3.0131 | 0.98642 |
| 3 | 2.3336 | 2.3661 | .98627 |
| 4 | 2.2761 | 2.3062 | .98694 |
| 6 | 1.0308 | 1.0457 | .98580 |
| 8 | 2.2545 | 2.2876 | .98552 |
| Avg. .98619 | |||
| Reference sample avg. 2.2752 Corrected ratio=2.2437 | |||
a
All calculations were done before rounding off.
b
Instrument equipped with ion multiplier.