Table T14. Replicate analyses of elemental concentrations of IAPSO seawater standard to establish typical precision of the Teledyne Prodigy high-dispersion ICP-AES, Expedition 317. (See table notes.)
|
Analysis no. |
Li (µM) |
B (µM) |
Si (µM) |
Sr (µM) |
Ba (µM) |
|---|---|---|---|---|---|
| Data set 1 | |||||
| 1 | 22.9 | 397.2 | 142.8 | 80.1 | 1.8 |
| 2 | 23.8 | 412.8 | 152.3 | 86.4 | 1.8 |
| 3 | 24.9 | 417.8 | 159.0 | 86.9 | 2.0 |
| 4 | 26.7 | 433.6 | 169.0 | 92.5 | 2.2 |
| 5 | 25.2 | 426.5 | 159.7 | 91.2 | 1.9 |
| 6 | 26.6 | 432.4 | 163.0 | 93.3 | 2.1 |
| 7 | 24.8 | 421.6 | 152.4 | 91.1 | 1.8 |
| Mean: | 25.0 | 420.3 | 156.9 | 88.8 | 1.9 |
| 2σ: | 2.7 | 25.4 | 17.0 | 9.3 | 0.3 |
| Data set 2 | |||||
| 1 | 27.1 | 418.6 | 152.2 | 89.3 | 1.6 |
| 2 | 26.2 | 411.8 | 148.0 | 88.7 | 1.5 |
| 3 | 26.7 | 415.8 | 148.9 | 88.9 | 1.6 |
| 4 | 26.4 | 410.1 | 148.1 | 88.8 | 1.5 |
| 5 | 27.1 | 410.0 | 150.5 | 88.7 | 1.7 |
| Mean: | 26.7 | 413.2 | 149.6 | 88.9 | 1.6 |
| 2σ: | 0.8 | 7.6 | 3.5 | 0.4 | 0.1 |
| Expected values: | 25.9 | 431 | 103 | 93.3 | 0.106 |
Notes: Data set 1 was run on 5 December 2009; data set 2 was run on 13 December 2009. Expected values are as published in Burton (1996). The Ba content of seawater is essentially zero (Murray et al., 2000), so it is uncertain why the measured Ba values in IAPSO seawater are slightly higher than this, as well as higher than some interstitial water samples analyzed during Expedition 317.
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