Round robin tests XRF-analysis XRF Round-robin test GeoPT7 - GBPG-1, Garnet-Biotite Plagiogneiss
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT7
Material of proficiency test:
GBPG-1, Garnet-Biotite Plagiogneiss
Study finished:
2000 - 7
Literature:
Preliminary Report - GeoPT7 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 3,540 | 3,600 | 0,180 | |
| MgO | 2,520 | 2,600 | 0,090 | |
| Al₂O₃ | 15,950 | 15,900 | 0,200 | |
| SiO₂ | 64,960 | 64,950 | 0,710 | |
| P₂O5 | 0,080 | 0,080 | 0,002 | |
| K₂O | 2,270 | 2,200 | 0,080 | |
| CaO | 2,850 | 2,800 | 0,050 | |
| TiO₂ | 0,712 | 0,694 | 0,024 | |
| Fe₂O₃ tot. | 6,020 | 6,030 | 0,020 | |
| MnO | 0,071 | 0,070 | 0,003 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 927,00 | 908,00 | 12,00 | |
| Ce | 90,00 | 103,00 | 1,20 | |
| Co | 20,00 | 19,50 | 0,30 | |
| Cr | 192,00 | 182,00 | 2,60 | |
| Cu | 31,00 | 30,00 | 0,40 | |
| Ga | 19,00 | 18,60 | 0,20 | |
| La | 49,00 | 53,00 | 0,80 | |
| Mo | 1,80 | 1,70 | 0,05 | |
| Nb | 8,00 | 9,90 | 0,22 | |
| Ni | 61,00 | 59,60 | 0,80 | |
| Pb | 16,00 | 14,10 | 0,24 | |
| Rb | 60,00 | 56,00 | 0,65 | |
| Sr | 388,00 | 363,50 | 2,60 | |
| Th | 12,50 | 11,30 | 0,23 | |
| V | 90,00 | 96,50 | 1,00 | |
| Y | 17,00 | 18,00 | 0,32 | |
| Zn | 81,00 | 80,30 | 0,70 | |
| Zr | 232,00 | 231,80 | 3,30 |
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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