Round robin tests XRF-analysis XRF Round-robin test GeoPT22 - MBL-1, Basalt
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT22
Material of proficiency test:
MBL-1, Basalt
Study finished:
2008 - 2
Literature:
Preliminary Report - GeoPT22 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 4,460 | 4,380 | 0,119 | |
| MgO | 6,410 | 6,300 | 0,231 | |
| Al₂O₃ | 14,490 | 14,460 | 0,302 | |
| SiO₂ | 51,260 | 51,760 | 0,515 | |
| P₂O5 | 0,837 | 0,846 | 0,05 | |
| K₂O | 4,060 | 4,020 | 0,112 | |
| CaO | 5,550 | 5,430 | 0,148 | |
| TiO₂ | 2,150 | 2,107 | 0,066 | |
| Fe₂O₃ tot. | 10,030 | 9,890 | 0,216 | |
| MnO | 0,134 | 0,130 | 0,005 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 780,00 | 755,00 | 41,00 | |
| Ce | 100,00 | 103,76 | 6,00 | |
| Co | 42,00 | 35,90 | 3,80 | |
| Cr | 241,00 | 214,80 | 21,70 | |
| Cu | 24,00 | 32,20 | 3,70 | |
| Ga | 24,00 | 22,70 | 1,80 | |
| La | 55,00 | 55,90 | 3,40 | |
| Nb | 54,00 | 51,30 | 4,70 | |
| Nd | 49,00 | 46,60 | 3,10 | |
| Ni | 171,00 | 159,30 | 12,50 | |
| Pb | 17,00 | 8,60 | 1,90 | |
| Pr | 12,00 | 11,90 | 0,70 | |
| Rb | 63,00 | 62,90 | 3,00 | |
| Sm | 7,00 | 6,70 | 0,50 | |
| Sr | 970,00 | 920,00 | 39,90 | |
| Th | 5,00 | 6,80 | 1,30 | |
| U | 1,00 | 1,70 | 0,40 | |
| V | 108,00 | 105,00 | 7,60 | |
| Y | 20,00 | 20,10 | 1,90 | |
| Zn | 117,00 | 115,47 | 9,00 | |
| Zr | 307,00 | 288,00 | 17,40 |
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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