Round robin tests XRF-analysis XRF Round-robin test GeoPT19 - MGR-N, Gabbro
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT19
Material of proficiency test:
MGR-N, Gabbro
Study finished:
2006 - 8
Literature:
Preliminary Report - GeoPT19 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 1,310 | 1,340 | 0,026 | |
| MgO | 4,620 | 4,680 | 0,074 | |
| Al₂O₃ | 22,250 | 22,250 | 0,279 | |
| SiO₂ | 43,000 | 43,290 | 0,491 | |
| P₂O5 | 0,043 | |||
| K₂O | 0,090 | |||
| CaO | 15,500 | 15,290 | 0,203 | |
| TiO₂ | 0,977 | 0,960 | 0,019 | |
| Fe₂O₃ tot | 11,060 | 10,760 | 0,151 | |
| MnO | 0,106 | 0,100 | 0,003 | |
| L.O.I. | 0,770 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| As | 1,30 | 1,75 | 0,13 | |
| Ba | 68,00 | 53,46 | 2,35 | |
| Ce | 10,00 | 3,42 | 0,23 | |
| Co | 38,00 | 35,30 | 165,00 | |
| Cr | 49,00 | 39,80 | 1,83 | |
| Cu | 590,00 | 594,00 | 18,20 | |
| Ga | 21,00 | 19,20 | 1,00 | |
| Hf | 0,40 | 0,34 | 0,03 | |
| Nd | 8,00 | 2,70 | 0,18 | |
| Ni | 20,00 | 19,70 | 1,00 | |
| Rb | 3,00 | |||
| Sr | 2,80 | 0,75 | 0,06 | |
| Th | 792,00 | 787,00 | 23,10 | |
| V | 439,00 | 453,00 | 14,40 | |
| Y | 6,00 | 4,40 | 0,28 | |
| Zn | 88,00 | 93,30 | 3,80 | |
| Zr | 7,00 | 10,00 | 0,57 |
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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