Round robin tests XRF-analysis XRF Round-robin test r-concept - Bauxite
Study organized by:
r-concept, Laupheim
Material of proficiency test:
Bauxit
Study finished:
2002 - 1
Literature:
Abschlussbericht
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | < 0,030 | 0,028 | 0,014 | --- |
| MgO | 1,280 | 1,198 | 0,110 | --- |
| Al₂O₃ | 86,550 | 86,550 | 0,904 | --- |
| SiO₂ | 6,400 | 6,260 | 0,331 | --- |
| P₂O5 | 0,256 | 0,248 | 0,021 | --- |
| SO₃ | 0,020 | 0,017 | 0,009 | --- |
| K₂O | 0,145 | 0,139 | 0,015 | --- |
| CaO | 0,220 | 0,230 | 0,028 | --- |
| TiO₂ | 3,410 | 3,415 | 0,120 | --- |
| Fe₂O₃ tot. | 1,410 | 1,445 | 0,149 | --- |
| MnO | 0,008 | 0,0084 | 0,003 | --- |
| L.O.I. | 0,170 | 0,218 | 0,118 | --- |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Cr | 383,00 | 433,00 | 91,00 | --- |
| Zr | 1450,00 | 1361,00 | 318,00 | --- |
Legend
CRB
results CRB
cooperative test
results collaborative study
1s-RV
Standard deviation collaborative study
Z-Score
Difference of measured value from mean study
*
Value not certified
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