Round robin tests XRF-analysis XRF Round-robin test 2015 - GeoPT36, England - GSM-1, Gabbro
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT36
Material of proficiency test:
GSM-1, (Gabbro)
Study finished:
2015 - 3
Literature:
Report - GeoPT36 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 1,870 | 1,850 | 0,033 | 0,300 |
| MgO | 4,230 | 4,520 | 0,072 | -2,000 |
| Al₂O₃ | 19,880 | 19,820 | 0,253 | 0,130 |
| SiO₂ | 45,350 | 45,650 | 0,514 | -0,320 |
| P₂O5 | 0,039 | 0,040 | 0,001 | -0,390 |
| K₂O | 0,170 | 0,170 | 0,004 | -0,450 |
| CaO | 12,560 | 12,540 | 0,171 | 0,070 |
| TiO₂ | 1,380 | 1,380 | 0,026 | 0,000 |
| Fe₂O₃ tot | 13,280 | 13,210 | 0,179 | 0,200 |
| MnO | 0,163 | 0,159 | 0,004 | 0,480 |
| L.O.I. * | 0,430 | 0,440 | 0,200 | --- |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 83,00 | 81,03 | 3,30 | 0,29 |
| Co | 39,00 | 39,50 | 1,80 | -0,14 |
| Cr * | 12,00 | 13,30 | 2,00 | --- |
| Cu | 97,00 | 90,40 | 3,70 | 0,90 |
| Ga | 21,00 | 20,30 | 1,00 | 0,35 |
| Hf | 0,80 | 0,83 | 0,10 | -0,22 |
| La | 12,00 | 12,60 | 0,70 | -0,30 |
| Ni | 16,00 | 13,50 | 0,70 | 1,75 |
| Pb | 10,00 | 11,00 | 0,60 | -0,82 |
| Sc | 35,00 | 38,50 | 1,80 | -0,99 |
| Sr | 397,00 | 386,00 | 12,60 | 0,44 |
| V | 595,00 | 600,90 | 5,50 | -0,16 |
| Y | 10,00 | 9,50 | 0,50 | 0,46 |
| Zn | 88,00 | 87,70 | 3,60 | 0,10 |
| Zr | 34,00 | 27,00 | 1,30 | 2,66 |
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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