Round robin tests XRF-analysis XRF Round-robin test GeoPT25, England - HTB-1, Basalt
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT25
Material of proficiency test:
HTB-1, Basalt
Study finished:
2009 - 8
Literature:
Preliminary Report - GeoPT25 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 2,620 | 2,730 | 0,057 | |
| MgO | 3,930 | 3,890 | 0,063 | |
| Al₂O₃ | 12,490 | 12,410 | 0,170 | |
| SiO₂ | 50,250 | 50,420 | 0,559 | |
| P₂O5 | 0,635 | 0,633 | 0,014 | |
| K₂O | 1,520 | 1,530 | 0,029 | |
| CaO | 7,880 | 7,850 | 0,115 | |
| TiO₂ | 0,520 | 0,534 | 0,012 | |
| Fe₂O₃ tot | 15,750 | 15,540 | 0,206 | |
| MnO | 0,221 | 0,215 | 0,005 | |
| L.O.I. | 0,360 | --- | --- |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 572,00 | 550,00 | 17,00 | |
| Ce | 101,00 | 93,00 | 3,70 | |
| Co | 54,00 | 38,00 | 1,80 | |
| Cr | 9,00 | 10,70 | 0,60 | |
| Cu | 162,00 | 161,00 | 6,00 | |
| Ga | 28,00 | 24,10 | 1,20 | |
| Hf | 6,00 | 7,90 | 0,50 | |
| La | 42,00 | 40,90 | 1,90 | |
| Nb | 27,00 | 29,20 | 1,40 | |
| Nd | 48,00 | 51,40 | 2,30 | |
| Ni | 35,00 | 32,10 | 1,10 | |
| Pr | 9,00 | 11,90 | 0,70 | |
| Rb | 34,00 | 35,00 | 1,70 | |
| Sm | 7,00 | 11,00 | 0,60 | |
| Sn | 7,00 | 2,60 | 0,20 | |
| Sr | 475,00 | 482,00 | 6,40 | |
| Th | 3,60 | 3,98 | 0,26 | |
| V | 385,00 | 392,80 | 12,80 | |
| Y | 37,00 | 39,90 | 1,80 | |
| Zn | 131,00 | 141,50 | 5,40 | |
| Zr | 293,00 | 310,10 | 10,50 |
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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