Table T3. Measured trace element abundances and recommended values for reference samples. (See table notes.)
| Element | W–2 | BAS–206 | BAS–312 | |||||
|---|---|---|---|---|---|---|---|---|
| RV (ppm) |
This study (ppm) |
RSD (%) |
RD (%) |
This study (ppm) |
RSD (%) |
This study (ppm) |
RSD (%) |
|
| Sc | 36.2 | 33.7 | 12.2 | –6.8 | 51.7 | 4.7 | 45.8 | 1.6 |
| V | 270 | 272 | 2.5 | 0.7 | 465 | 6.3 | 321 | 4.3 |
| Cr | 92 | 91.3 | 3.1 | –0.7 | 84.6 | 9.1 | 252 | 6.2 |
| Co | 46 | 43.2 | 6.8 | –6.1 | 55.1 | 2.4 | 46.7 | 1.8 |
| Ni | 74 | 75.0 | 6.5 | 1.4 | 50.7 | 3.8 | 88.9 | 5.2 |
| Zn | 77 | 74.6 | 3.2 | –3.2 | 133 | 2.4 | 89.3 | 2.2 |
| Ga | 17.4 | 16.7 | 3.9 | –3.9 | 19.2 | 2.5 | 16.5 | 1.4 |
| Rb | 20.1 | 19.7 | 3.4 | –2.2 | 2.0 | 4.0 | 0.47 | 1.5 |
| Sr | 191.8 | 188.0 | 3.4 | –2.0 | 102 | 1.4 | 101 | 1.2 |
| Y | 22.8 | 22.8 | 2.3 | –0.01 | 50.2 | 1.7 | 30.8 | 1.5 |
| Zr | 92.0 | 93.0 | 2.4 | 1.1 | 128 | 1.2 | 79.2 | 2.1 |
| Zr* | 101 | 2.4 | 10.1 | |||||
| Nb | 7.76 | 7.67 | 2.2 | –1.2 | 4.7 | 1.4 | 3.33 | 1.2 |
| Cs | 0.916 | 0.913 | 3.2 | –0.3 | 0.1 | 4.4 | 0.02 | 5.7 |
| Ba | 171 | 169 | 1.7 | –1.2 | 42.2 | 5.5 | 12.2 | 3.0 |
| La | 10.59 | 10.4 | 1.4 | –1.5 | 4.7 | 1.0 | 3.03 | 1.0 |
| Ce | 23.08 | 22.8 | 1.5 | –1.1 | 13.9 | 1.6 | 8.63 | 1.4 |
| Pr | 3.03 | 3.02 | 1.6 | –0.3 | 2.4 | 1.6 | 1.44 | 2.4 |
| Nd | 12.95 | 12.9 | 2.4 | –0.0 | 13.2 | 1.3 | 7.83 | 2.9 |
| Sm | 3.31 | 3.24 | 2.8 | –2.2 | 4.7 | 2.2 | 2.80 | 2.8 |
| Eu | 1.093 | 1.05 | 4.5 | –3.8 | 1.6 | 0.8 | 1.03 | 3.4 |
| Gd | 3.69 | 3.65 | 2.6 | –1.1 | 6.5 | 1.7 | 3.90 | 2.0 |
| Tb | 0.622 | 0.61 | 3.0 | –1.4 | 1.2 | 2.3 | 0.71 | 2.3 |
| Dy | 3.79 | 3.77 | 3.1 | –0.6 | 7.9 | 1.0 | 4.81 | 0.8 |
| Ho | 0.798 | 0.78 | 2.1 | –2.6 | 1.8 | 1.9 | 1.06 | 2.9 |
| Er | 2.26 | 2.22 | 3.6 | –1.6 | 5.2 | 1.3 | 3.11 | 2.1 |
| Yb | 2.03 | 2.04 | 2.9 | 0.3 | 4.7 | 1.5 | 3.07 | 2.2 |
| Lu | 0.299 | 0.304 | 3.8 | 1.8 | 0.71 | 1.1 | 0.47 | 1.3 |
| Hf | 2.30 | 2.33 | 2.3 | 1.3 | 3.3 | 2.5 | 2.02 | 1.7 |
| Hf* | 2.43 | 4.0 | 5.7 | |||||
| Ta | 0.483 | 0.47 | 4.0 | –3.4 | 0.5 | 1.1 | 0.28 | 1.2 |
| Pb | 7.81 | 7.63 | 9.2 | –2.3 | 0.6 | 25.2 | 0.23 | 4.4 |
| Th | 2.21 | 2.28 | 3.2 | 3.2 | 0.3 | 3.6 | 0.23 | 1.7 |
| Th* | 2.24 | 4.6 | 1.32 | |||||
| U | 0.497 | 0.509 | 5.4 | 2.4 | 0.316 | 3.4 | 0.101 | 1.6 |
| U* | 0.502 | 2.7 | 0.92 | |||||
Notes: Recommended values (RV) of W–2 standard are from Eggins et al. (1997). Abundances of Zr, Hr, Th, and U of W–2 following alkali fusion are also shown. Relative deviation (RD) values calculated between RV, values from this study, and relative standard deviation (RSD) values, an estimate of precision. For all reference samples n = 5 except where denoted by *, where n = 8.
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