Table T6. Precision and accuracy of 12 replicate trace-element analyses on sediment reference standard MAG-1.
Element | Concentration (ppm) |
Standard
deviation |
Recommended
(ppm) |
Nb | 18 | 1.17 | 12 |
Zr | 132 | 1.42 | 126 |
Y | 40 | 0.67 | 28 |
Sr | 142 | 1.15 | 146 |
Rb | 159 | 1.32 | 149 |
Zn | 135 | 1.25 | 130 |
Cu | 30 | 1.20 | 30 |
Ni | 57 | 0.97 | 53 |
Cr | 94 | 3.57 | 91 |
V | 158 | 3.45 | 140 |
Ce | 80 | 4.24 | 88 |
Ba | 442 | 9.92 | 479 |
Note: From Govindaraju (1989).