Round robin tests XRF-analysis XRF Round-robin test - GeoPT 37, England - ORPT-1, Rhyolite
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT37
Material of proficiency test:
ORPT-1, (Rhyolite)
Study finished:
2015 - 7
Literature:
Report - GeoPT37 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 4,530 | 4,590 | 0,073 | 0,410 |
| MgO | 0,480 | 0,470 | 0,011 | 0,470 |
| Al₂O₃ | 12,580 | 12,550 | 0,172 | 0,090 |
| SiO₂ | 74,970 | 74,840 | 0,782 | 0,080 |
| P₂O5 | 0,058 | 0,057 | 0,002 | 0,280 |
| K₂O | 2,150 | 2,140 | 0,038 | 0,130 |
| CaO | 12,560 | 12,540 | 0,171 | 0,670 |
| TiO₂ | 1,170 | 1,140 | 0,022 | 0,080 |
| Fe₂O₃ tot | 2,880 | 2,910 | 0,050 | -0,290 |
| MnO | 0,061 | 0,060 | 0,002 | 0,270 |
| L.O.I. | 0,610 | 0,770 | 0,020 | -5,090 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 385,00 | 374,00 | 12,30 | 0,44 |
| Ce | 65,00 | 62,10 | 2,70 | 0,54 |
| Cl * | 95,00 | 82,00 | 55,00 | --- |
| Cr | 65,00 | 65,30 | 2,80 | -0,05 |
| F * | 200,00 | 312,00 | 149,00 | --- |
| Ga | 18,00 | 16,00 | 0,50 | 1,19 |
| Ge | 1,60 | 1,48 | 0,10 | 0,56 |
| Hf | 6,00 | 7,50 | 0,40 | -1,72 |
| La | 25,00 | 27,00 | 1,30 | -0,76 |
| Nd | 31,00 | 34,80 | 1,60 | -1,16 |
| Ni | 5,00 | 6,00 | 0,50 | -1,32 |
| Pb | 2,00 | 5,00 | 0,30 | -4,81 |
| Pr | 7,00 | 8,20 | 0,60 | -1,25 |
| Rb | 50,00 | 52,10 | 2,30 | -0,45 |
| Sc | 35,00 | 38,50 | 1,80 | -0,32 |
| Sm | 8,00 | 9,00 | 0,50 | -0,28 |
| Sr | 72,00 | 72,00 | 3,00 | 0,06 |
| V | 13,00 | 10,20 | 0,60 | 2,46 |
| Y | 71,00 | 70,80 | 3,00 | 0,04 |
| Zn | 55,00 | 51,20 | 2,30 | 0,85 |
| Zr | 240,00 | 245,80 | 8,60 | -0,33 |
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
Order inquiry & contact
Important information
