|
Element
|
Wavelength
(nm) |
Detection
limit (wt% or ppm)‡ |
Within-run
drift (%)** |
Within-run
precision (%)†† |
Within-site
precision (%)‡‡ |
Long-term
precision (%)*** |
|---|---|---|---|---|---|---|
| Si | 251.611 | 0.1 | 1.2 | 1.7 | 0.9 | 3.3 |
| Al | 396.152 | 0.02 | 1.1 | 0.8 | 3.8 | 5.1 |
| Ti | 334.941 | 0.002 | 0.5 | 0.6 | 1.3 | 21.7 |
| Fe | 259.940 | 0.003 | 2.9 | 0.9 | 2.4 | 9.2 |
| Mn | 257.610 | 0.001 | 0.8 | 1.2 | 1.9 | 8.1 |
| Ca | 393.366 | 0.012 | 1.7 | 0.9 | 0.7 | 11.5 |
| Mg | 285.213 | 0.003 | 0.5 | 7.6 | 2.3 | 12.7 |
| P* | 178.229 | 0.07 | 30.8 | 68.5 | 67.8 | 32.9 |
| P† | 178.229 | 0.07 | 11.2 | — | 8.6 | — |
| Ba | 455.403 | 3.9 | 1.7 | 0.3 | 2.8 | 21.3 |
| Sr | 407.771 | 1.7 | 1.3 | 1.0 | 1.9 | 14.7 |
Notes: * = phosphorus analyses using the nitrogen generator, Site 1218. † = phosphorous analyses using the nitrogen storage tank, Site 1221. ‡ = detection limits calculated as three times the standard deviation of the blank: Si, Al, Ti, Fe, Mn, Ca, Mg, and P listed in weight percent, and Ba and Sr listed in ppm. ** = representative drift values within a single analytical run, Site 1218. †† = representative precision for a single typical analytical run using JCh-1, Site 1218. ‡‡ = representative precision using drift solution, Site 1218. *** = based on precision values, Sites 1215-1221.