Round robin tests XRF-analysis XRF Round-robin test GeoPT 47A, England - NES-1, Silty Soil
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT 47A
Material of proficiency test:
NES-1, Silty Soil
Study finished:
2021 - 1
Literature:
Report - GeoPT47A Proficiency Testing Round 47A(Laborcode CRB = J88)
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| SiO₂ | 80,120 | 80,150 | 0,829 | -0,020 |
| TiO₂ | 0,696 | 0,700 | 0,015 | -0,140 |
| Al₂O₃ | 5,680 | 5,670 | 0,087 | 0,060 |
| Fe₂O₃tot | 3,160 | 3,121 | 0,053 | 0,370 |
| MnO | 0,094 | 0,091 | 0,003 | 0,560 |
| MgO | 0,500 | 0,500 | 0,011 | -0,060 |
| CaO | 0,340 | 0,320 | 0,008 | 1,320 |
| Na₂O* | 0,280 | 0,282 | 0,056 | -0,020 |
| K₂O | 1,040 | 1,045 | 0,021 | -0,120 |
| P₂O5 | 0,227 | 0,230 | 0,010 | -0,260 |
| L.O.I. | 7,690 | 7,640 | 0,113 | 0,220 |
| TOC* | 2,690 | 2,510 | 0,442 | 0,200 |
| C-gesamt* | 2,820 | 2,930 | 0,369 | -0,150 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 150,00 | 160,50 | 6,00 | -0,88 |
| Cr | 76,00 | 62,20 | 2,70 | 2,58 |
| Cu | 19,00 | 18,00 | 0,90 | 0,54 |
| Ga | 10,00 | 8,10 | 0,50 | 2,05 |
| Hf | 8,50 | 8,10 | 0,50 | 0,42 |
| Nb | 11,00 | 14,40 | 0,80 | -2,23 |
| Ni | 21,00 | 19,10 | 1,00 | 1,00 |
| Pb | 38,00 | 40,00 | 1,80 | -0,55 |
| Rb | 48,00 | 54,00 | 2,40 | -1,27 |
| Sr | 30,00 | 27,00 | 1,30 | 1,14 |
| V | 49,00 | 51,00 | 2,30 | -0,44 |
| Y | 19,00 | 17,80 | 0,90 | 0,65 |
| Zn | 68,00 | 64,10 | 2,70 | 0,71 |
| Zr | 330,00 | 322,00 | 10,80 | 0,37 |
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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