Round robin tests XRF-analysis XRF Round-robin test GeoPT27, England - MGL-AND, Andesite
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT27
Material of proficiency test:
MGL-AND, (Andesite)
Study finished:
2010 - 8
Literature:
Preliminary Report - GeoPT27 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 4,410 | 4,480 | 0,071 | |
| MgO | 3,560 | 3,550 | 0,059 | |
| Al₂O₃ | 16,780 | 16,690 | 0,219 | |
| SiO₂ | 59,270 | 59,230 | 0,641 | |
| P₂O5 | 0,262 | 0,261 | 0,006 | |
| K₂O | 2,370 | 2,400 | 0,042 | |
| CaO | 5,550 | 5,580 | 0,086 | |
| TiO₂ | 0,717 | 0,714 | 0,015 | |
| Fe₂O₃ tot. | 5,550 | 5,420 | 0,084 | |
| MnO | 0,080 | 0,080 | 0,002 | |
| L.O.I.* | 1,300 | 1,400 | 0,030 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| As | 2,40 | 2,70 | 0,20 | |
| Ba | 680,00 | 673,00 | 20,00 | |
| Ce | 50,00 | 53,00 | 2,30 | |
| Co | 25,00 | 19,50 | 1,00 | |
| Cr | 101,00 | 95,00 | 3,80 | |
| Cu | 34,00 | 41,30 | 1,90 | |
| Ga | 20,00 | 21,00 | 1,10 | |
| Hf | 3,40 | 3,60 | 0,20 | |
| La | 25,00 | 25,40 | 1,20 | |
| Nb | 1,00 | 3,40 | 0,20 | |
| Nd | 29,00 | 26,30 | 1,30 | |
| Ni | 62,00 | 62,50 | 2,70 | |
| Pb | 10,00 | 18,30 | 0,90 | |
| Pr | 4,00 | 6,50 | 0,40 | |
| Rb | 33,00 | 49,90 | 2,20 | |
| Sm | 3,00 | 5,10 | 0,30 | |
| Sr | 1125,00 | 1116,00 | 31,10 | |
| Th | 7,00 | 6,20 | 0,40 | |
| U | 1,00 | 1,90 | 0,10 | |
| V | 115,00 | 121,00 | 4,70 | |
| Y | 11,00 | 12,00 | 0,10 | |
| Zn | 71,00 | 70,00 | 3,00 | |
| Zr | 126,00 | 148,00 | 5,60 |
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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