Table T3. Check-standard data for ICP-AES analyses, Expedition 336.
| Element | BAS-140 | MRG-1 | ||||
|---|---|---|---|---|---|---|
| Mean (N = 8) |
RSD % (1σ) |
Published | Mean (N = 8) |
RSD % (1σ) |
Published | |
| Major (wt%): | ||||||
| SiO2 | 50.81 | 0.7 | 50.5 | 38.9 | 0.7 | 39.6 |
| TiO2 | 0.984 | 0.5 | 0.98 | 3.83 | 0.9 | 3.82 |
| Al2O3 | 14.5 | 0.5 | 14.6 | 8.66 | 0.6 | 8.57 |
| Fe2O3T | 11.0 | 0.8 | 11.1 | 18.0 | 1.1 | 18.2 |
| MnO | ND | 0.19 | ND | |||
| MgO | 8.21 | 1.0 | 8.15 | 13.4 | 0.7 | 13.7 |
| CaO | 12.4 | 0.5 | 12.4 | 14.7 | 0.8 | 14.9 |
| Na2O | 1.86 | 2.1 | 1.84 | 0.69 | 1.6 | 0.75 |
| K2O | 0.02 | 4.8 | 0.01 | 0.17 | 1.3 | 0.18 |
| P2O5 | 0.08 | 18.9 | 0.08 | 0.09 | 18.5 | 0.08 |
| Trace (ppm): | ||||||
| Ba | 3.0 | 20.0 | 2* | 55.3 | 3.0 | |
| Sr | 31.9 | 8.5 | 44 | 275 | 2.3 | 270 |
| Zr | 48.3 | 3.0 | 49* | 111 | 2.8 | 109 |
| Y | 27.5 | 2.9 | 24 | 13.5 | 4.1 | 14.2 |
| V | 335 | 0.7 | 333* | 523 | 1.1 | 533 |
| Sc | 45.2 | 0.8 | 43 | 54.6 | 0.4 | 55.7 |
| Cu | 85.3 | 1.5 | 81 | 130 | 2.1 | 136 |
| Zn | 65.3† | 2.3† | 80 | 191† | 0.5† | 194 |
| Co | 49.4 | 1.4 | 55 | 88.0 | 2.3 | 88.1 |
| Cr | 185 | 1.2 | 186 | 445 | 0.5 | 436 |
| Ni | 82.5 | 2.8 | 85 | 191 | 3.4 | 196 |
* = values reported by Expedition 309/312 Shipboard Scientific Party (2006). † = values calculated based on N = 4. ICP-AES = inductively coupled plasma–atomic emission spectroscopy. BAS-140 = values published by Sparks and Zuleger (1995). MRG-1 = values published by Govindaraju (1989). RSD = run-to-run relative standard deviation. Uncertainties are listed as RSD% (1σ). Fe2O3T = total iron calculated as ferric oxide. ND = not determined. BAS-140 is a laboratory standard.
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